| 3. |  |
A = 1 Trivial. 3-fold dihedral symmetry. |
| 4. | 
| A = 1/2 = .500 Trivial. 4-fold dihedral symmetry. |
| 5. | 
| A = (5 – √5) / 10 = .276+ Found by David Cantrell in June 2007. 5-fold dihedral symmetry. |
| 6. | 
| A = 1/6 = .166+ Found by David Cantrell in June 2007. 6-fold dihedral symmetry. |
| 7. | 
| A = 1/9 = .111+ Proved by Zhenbing Zeng and Lu Yang in 1995. 3-fold dihedral symmetry. |
| 8. | 
| 
| 
| A = .0800+ Found by David Cantrell in June 2007. 2-fold symmetry. |
| 9. | 
| 
| A = .0640+ Found by David Cantrell in June 2007. 2-fold symmetry. |
| 10. | 
| 
| A = .0519+ Found by David Cantrell in June 2007. 2-fold dihedral symmetry. |
| 11. | 
| 
| 
| A = 2/47 = .0425+ Found by David Cantrell in June 2007. 2-fold symmetry. |
| 12. | 
| 
| A = 2/51 = .0392+ Found by David Cantrell in June 2007. 3-fold dihedral symmetry. |
| 13. | 
| 
| 
|
| 
| A = .03093+ Found by David Cantrell in June 2007. No symmetry. |
| 14. | 
| 
| 
| A = .02783+ Found by AlphaEvolve in June 2025. No symmetry. |
| 15. | 
| 
| 
| A = .02456+ Found by Tej Stead in July 2026. No symmetry. |
| 
| 
|
| 16. | 
| A = .0222+ Found by David Cantrell in June 2007. 4-fold dihedral symmetry. |
| 17. | 
| 
| 
| A = .018731+ Found by Tej Stead in July 2026. No symmetry. |
| 
| 
|
| 18. | 
| 
|
A = [2 – (3/2 – √(239/3)/6)1/3 – (3/2 + √(239/3)/6)1/3] / 18 A = .018238+ Found by Tej Stead in July 2026. 6-fold dihedral symmetry. |
| 
|
| 19. | 
| 
| 
| A = .014527+ Found by Tej Stead in July 2026. No symmetry. |
| 
| 
|
| 20. | 
| 
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| A = .013266+ Found by Tej Stead in July 2026. No symmetry. |
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|
| 21. | 
| 
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| A = .011650+ Found by Tej Stead in July 2026. No symmetry. |
| 
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|
| 22. | 
| 
| 
| 
|
| 
| 
| A = .010150+ Found by Tej Stead in July 2026. No symmetry. |
| 23. | 
| 
| 
| 
|
| 
| 
| A = .009216+ Found by Tej Stead in July 2026. No symmetry. |
| 24. | 
| 
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| 
|
| 
| 
| A = .008512+ Found by Tej Stead in July 2026. No symmetry. |
| 25. | 
| 
| 
| 
| A = .007805+ Found by Tej Stead in July 2026. No symmetry. |
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|
| 26. | 
| 
| 
| 
| A = .006848+ Found by Tej Stead in July 2026. No symmetry. |
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|
| 27. | 
| 
| 
| 
| A = .006200+ Found by Tej Stead in July 2026. No symmetry. |
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|
| 28. | 
| 
| 
| 
|
| 
| 
| A = .005477+ Found by Tej Stead in July 2026. No symmetry. |