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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2598156 |
| 3 | 938176344 |
| 4 | 279339197256 |
| 5 | 75556007986536 |
| 6 | 19356924219624936 |
| 7 | 4786284820998999528 |
| 8 | 1154228064358389881112 |
| 9 | 273210106596010141952520 |
| 10 | 63745055133289730721040968 |
| 11 | 14703244384392257014503473256 |
[0,2598156,938176344,279339197256,75556007986536, 19356924219624936,4786284820998999528, 1154228064358389881112,273210106596010141952520, 63745055133289730721040968, 14703244384392257014503473256] |