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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 252 |
| 3 | 39483 |
| 4 | 5332114 |
| 5 | 670592745 |
| 6 | 80779853376 |
| 7 | 9449772114007 |
| 8 | 1082152022374638 |
| 9 | 121932631112635269 |
| 10 | 135650052221140070110 |
| 11 | 1371589685334334871208531 |
| 12 | 14951973660666886818972704952 |
[1,252,39483,5332114,670592745,80779853376, 9449772114007,1082152022374638,121932631112635269, 135650052221140070110,1371589685334334871208531, 14951973660666886818972704952] |