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| n | a(n) |
|---|---|
| 1 | 17920 |
| 2 | 310912 |
| 3 | 5550256 |
| 4 | 101702648 |
| 5 | 1912957100 |
| 6 | 36783376600 |
| 7 | 718097911212 |
| 8 | 14168783055608 |
| 9 | 281683319581364 |
| 10 | 5628530205351848 |
| 11 | 112878301213615480 |
| 12 | 2269166138679395320 |
| 13 | 45695383178079335324 |
| 14 | 921207719717378895736 |
[17920,310912,5550256,101702648,1912957100, 36783376600,718097911212,14168783055608, 281683319581364,5628530205351848, 112878301213615480,2269166138679395320, 45695383178079335324,921207719717378895736] |