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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 10770 |
| 4 | 391078610 |
| 5 | 3726299739235 |
| 6 | 21381615692198496 |
| 7 | 94874768179629903791 |
| 8 | 356146243319205483449324 |
| 9 | 1175202923618550525380785445 |
| 10 | 3477285812292457629346580658452 |
| 11 | 9342276737713789131291334393809066 |
| 12 | 22999181651575665250257608640008725008 |
[0,0,10770,391078610,3726299739235, 21381615692198496,94874768179629903791, 356146243319205483449324, 1175202923618550525380785445, 3477285812292457629346580658452, 9342276737713789131291334393809066, 22999181651575665250257608640008725008] |