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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 232 |
| 2 | 22054 |
| 3 | 902962 |
| 4 | 20758650 |
| 5 | 313568636 |
| 6 | 3444274966 |
| 7 | 29445929253 |
| 8 | 205617134345 |
| 9 | 1214911142900 |
| 10 | 6238854236951 |
| 11 | 28428076580526 |
| 12 | 116844463511314 |
| 13 | 438968651731176 |
| 14 | 1523790358321400 |
| 15 | 4931487866349689 |
| 16 | 14991891923697588 |
| 17 | 43084786003434739 |
| 18 | 117690415289036999 |
[1,232,22054,902962,20758650,313568636,3444274966, 29445929253,205617134345,1214911142900, 6238854236951,28428076580526,116844463511314, 438968651731176,1523790358321400,4931487866349689, 14991891923697588,43084786003434739, 117690415289036999] |