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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 44 |
| 3 | 1682 |
| 4 | 101573 |
| 5 | 4505726 |
| 6 | 286019636 |
| 7 | 13029003006 |
| 8 | 847775163675 |
| 9 | 39163069348499 |
| 10 | 2586615582072818 |
| 11 | 120546656751917002 |
| 12 | 8041164730409837733 |
| 13 | 377031919338288517436 |
| 14 | 25328506526109972349940 |
| 15 | 1192869061178928489347148 |
[0,44,1682,101573,4505726,286019636,13029003006, 847775163675,39163069348499,2586615582072818, 120546656751917002,8041164730409837733, 377031919338288517436,25328506526109972349940, 1192869061178928489347148] |