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A002502 as a simple table
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 65 |
| 3 | 1795 |
| 4 | 36317 |
| 5 | 636331 |
| 6 | 10365005 |
| 7 | 162470155 |
| 8 | 2495037197 |
| 9 | 37898120011 |
| 10 | 572284920845 |
| 11 | 8614868501515 |
| 12 | 129467758660877 |
| 13 | 1943971108806091 |
| 14 | 29175170378428685 |
| 15 | 437752102106036875 |
| 16 | 6567275797761209357 |
[1,65,1795,36317,636331,10365005,162470155, 2495037197,37898120011,572284920845,8614868501515, 129467758660877,1943971108806091, 29175170378428685,437752102106036875, 6567275797761209357] |