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| n | a(n) |
|---|---|
| 1 | 40 |
| 2 | 1608 |
| 3 | 28448 |
| 4 | 535671 |
| 5 | 9722206 |
| 6 | 170405645 |
| 7 | 2902520386 |
| 8 | 48303362606 |
| 9 | 788657935296 |
| 10 | 12673198849045 |
| 11 | 200926746561814 |
| 12 | 3149086238797127 |
| 13 | 48865266229013882 |
| 14 | 751678393470169836 |
| 15 | 11474405764402402524 |
[40,1608,28448,535671,9722206,170405645, 2902520386,48303362606,788657935296, 12673198849045,200926746561814,3149086238797127, 48865266229013882,751678393470169836, 11474405764402402524] |