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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 44 |
| 3 | 464 |
| 4 | 5992 |
| 5 | 76136 |
| 6 | 968824 |
| 7 | 12322784 |
| 8 | 156753000 |
| 9 | 1993963288 |
| 10 | 25364073040 |
| 11 | 322641895760 |
| 12 | 4104143547136 |
| 13 | 52206469041840 |
| 14 | 664088714466040 |
| 15 | 8447493744195456 |
| 16 | 107455749517836112 |
| 17 | 1366883297468138664 |
[0,44,464,5992,76136,968824,12322784,156753000, 1993963288,25364073040,322641895760,4104143547136, 52206469041840,664088714466040,8447493744195456, 107455749517836112,1366883297468138664] |