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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 913 |
| 3 | 47936 |
| 4 | 10599449 |
| 5 | 1339732352 |
| 6 | 212852911361 |
| 7 | 30863909708032 |
| 8 | 4646631858824169 |
| 9 | 689003645197185280 |
| 10 | 102804050401764094481 |
| 11 | 15300259132449601539840 |
| 12 | 2279486758722355781575289 |
[0,913,47936,10599449,1339732352,212852911361, 30863909708032,4646631858824169, 689003645197185280,102804050401764094481, 15300259132449601539840,2279486758722355781575289] |