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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 176 |
| 3 | 1575425 |
| 4 | 234631320 |
| 5 | 2098015778145 |
| 6 | 312461813932000 |
| 7 | 2793956983975264801 |
| 8 | 416109772078405066376 |
| 9 | 3720751630955537773670465 |
| 10 | 554139209013308662750166160 |
| 11 | 4954977037463529073741814611905 |
| 12 | 737954942591533222733596372781560 |
| 13 | 6598612290464985405278051366305034401 |
[0,1,176,1575425,234631320,2098015778145, 312461813932000,2793956983975264801, 416109772078405066376,3720751630955537773670465, 554139209013308662750166160, 4954977037463529073741814611905, 737954942591533222733596372781560, 6598612290464985405278051366305034401] |