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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 40 |
| 3 | 1721 |
| 4 | 14144 |
| 5 | 2294005 |
| 6 | 326924482 |
| 7 | 6386359423 |
| 8 | 1341160319494 |
| 9 | 149759650255065 |
| 10 | 1167478867440605 |
| 11 | 243422399538851918 |
| 12 | 9662500171353620019 |
| 13 | 122479951673184550424 |
| 14 | 12148820281768361731597 |
| 15 | 177497315692809432279207 |
| 16 | 11767210525408975519141638 |
[0,40,1721,14144,2294005,326924482,6386359423, 1341160319494,149759650255065,1167478867440605, 243422399538851918,9662500171353620019, 122479951673184550424,12148820281768361731597, 177497315692809432279207, 11767210525408975519141638] |