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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 6435 |
| 3 | 28440320 |
| 4 | 1523926182363 |
| 5 | 232075055225078521 |
| 6 | 67887185669916054862201 |
| 7 | 32104063492616280061833179530 |
| 8 | 22081439406257212482754663652213531 |
| 9 | 20535540740510211632088991774438342144131 |
| 10 | 24486820402563168156475227361324722817780058649 |
[1,1,6435,28440320,1523926182363, 232075055225078521,67887185669916054862201, 32104063492616280061833179530, 22081439406257212482754663652213531, 20535540740510211632088991774438342144131, 24486820402563168156475227361324722817780058649] |