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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 496 |
| 3 | 2525 |
| 4 | 33152 |
| 5 | 636070 |
| 6 | 13375327 |
| 7 | 266882021 |
| 8 | 5754725245 |
| 9 | 125608726910 |
| 10 | 2751441878716 |
| 11 | 60560951633302 |
| 12 | 1338653889825967 |
| 13 | 29617783009064771 |
| 14 | 655764759948936409 |
| 15 | 14528234528855832400 |
| 16 | 321957970196713225956 |
[1,496,2525,33152,636070,13375327,266882021, 5754725245,125608726910,2751441878716, 60560951633302,1338653889825967,29617783009064771, 655764759948936409,14528234528855832400, 321957970196713225956] |