| 1. | | Self-Complementary Graphs (mathworld.wolfram.com) |
| 3 points by lorenzohess 5 months ago | past | 1 comment |
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| 2. | | Formulas for Pi (mathworld.wolfram.com) |
| 1 point by dap 7 months ago | past |
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| 3. | | Busy Beaver (mathworld.wolfram.com) |
| 3 points by luingyasmi on July 8, 2025 | past |
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| 4. | | Rényi's Polynomial (mathworld.wolfram.com) |
| 2 points by IdealeZahlen on Feb 6, 2025 | past |
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| 5. | | Vampire Number (mathworld.wolfram.com) |
| 65 points by dustfinger on Oct 22, 2024 | past | 13 comments |
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| 6. | | Tribonacci Number (mathworld.wolfram.com) |
| 1 point by ustad on Sept 25, 2024 | past |
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| 7. | | Feynman Point (mathworld.wolfram.com) |
| 3 points by Bluestein on Aug 29, 2024 | past |
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| 8. | | Transcendental Numbers (mathworld.wolfram.com) |
| 2 points by wslh on Aug 19, 2024 | past |
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| 9. | | Prime-Generating Polynomial (mathworld.wolfram.com) |
| 2 points by gone35 on Aug 7, 2024 | past |
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| 10. | | Coastline Paradox (mathworld.wolfram.com) |
| 1 point by Anon84 on March 25, 2024 | past |
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| 11. | | Prime Spiral (mathworld.wolfram.com) |
| 2 points by EndXA on Feb 20, 2024 | past |
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| 12. | | Magic Square (mathworld.wolfram.com) |
| 1 point by stefankuehnel on July 9, 2023 | past |
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| 13. | | God's Number (mathworld.wolfram.com) |
| 2 points by kashnote on May 19, 2023 | past |
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| 14. | | Ulam's Prime Spiral (mathworld.wolfram.com) |
| 2 points by najdan33 on Jan 15, 2023 | past | 1 comment |
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| 15. | | Feynman Point (mathworld.wolfram.com) |
| 2 points by belter on Feb 6, 2022 | past |
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| 16. | | Highly Composite Number (mathworld.wolfram.com) |
| 1 point by susam on Sept 15, 2021 | past |
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| 17. | | Curry Triangle (mathworld.wolfram.com) |
| 38 points by lemonspat on Dec 24, 2020 | past | 9 comments |
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| 18. | | Singularity (mathworld.wolfram.com) |
| 1 point by webdva on July 14, 2020 | past |
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| 19. | | Pythagorean Triple (mathworld.wolfram.com) |
| 1 point by peter_d_sherman on July 2, 2020 | past |
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| 20. | | Surreal Number (mathworld.wolfram.com) |
| 1 point by tosh on June 20, 2020 | past |
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| 21. | | Skewes Number (mathworld.wolfram.com) |
| 2 points by c0restraint on Jan 31, 2020 | past |
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| 22. | | Franklin Magic Square (mathworld.wolfram.com) |
| 1 point by vo2maxer on Jan 20, 2020 | past |
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| 23. | | Engel Expansion (mathworld.wolfram.com) |
| 1 point by peter_d_sherman on Aug 29, 2019 | past | 1 comment |
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| 24. | | McNugget Number (mathworld.wolfram.com) |
| 1 point by dgellow on May 19, 2019 | past |
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| 25. | | Game Saddle Point (mathworld.wolfram.com) |
| 2 points by tango24 on Aug 26, 2018 | past |
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| 26. | | Chaos game (1988) (mathworld.wolfram.com) |
| 1 point by amuresan on Aug 4, 2018 | past |
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| 27. | | Binet's Fibonacci number formula (mathworld.wolfram.com) |
| 1 point by badminton1 on April 18, 2018 | past |
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| 28. | | Kissing Number (mathworld.wolfram.com) |
| 3 points by weinzierl on March 6, 2018 | past |
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| 29. | | The Batman Curve (or more precisely the Bat-arang curve) (mathworld.wolfram.com) |
| 1 point by mohaps on Dec 22, 2017 | past |
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| 30. | | Tupper’s Self-Referential Equation (mathworld.wolfram.com) |
| 52 points by valgaze on Nov 10, 2017 | past | 7 comments |
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| More |
