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| n | a(n) |
|---|---|
| 1 | 64 |
| 2 | 659 |
| 3 | 10167 |
| 4 | 123976 |
| 5 | 1529241 |
| 6 | 18220241 |
| 7 | 210476400 |
| 8 | 2427784475 |
| 9 | 27272243911 |
| 10 | 306906072088 |
| 11 | 3392662878321 |
| 12 | 37516091561153 |
| 13 | 410121025237344 |
| 14 | 4478699111368451 |
| 15 | 48545701054002647 |
| 16 | 525277883650197736 |
[64,659,10167,123976,1529241,18220241,210476400, 2427784475,27272243911,306906072088,3392662878321, 37516091561153,410121025237344,4478699111368451, 48545701054002647,525277883650197736] |