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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 64 |
| 3 | 2660 |
| 4 | 35328 |
| 5 | 5852058 |
| 6 | 962138367 |
| 7 | 498846580538 |
| 8 | 14960802865507 |
| 9 | 4130309844097522 |
| 10 | 268900326021822223 |
| 11 | 236947971476002244912 |
| 12 | 8961761176387874932701 |
| 13 | 1772674566449746258218428 |
[1,64,2660,35328,5852058,962138367,498846580538, 14960802865507,4130309844097522, 268900326021822223,236947971476002244912, 8961761176387874932701,1772674566449746258218428] |