The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 286 |
| 2 | 2302 |
| 3 | 20398 |
| 4 | 150862 |
| 5 | 1155953 |
| 6 | 7379380 |
| 7 | 48788187 |
| 8 | 273307984 |
| 9 | 1578043496 |
| 10 | 7881635316 |
| 11 | 40377942968 |
| 12 | 182401018359 |
| 13 | 842470282449 |
| 14 | 3486469196480 |
| 15 | 14723645176175 |
| 16 | 56437062063876 |
| 17 | 220480959884552 |
| 18 | 790014974680676 |
[286,2302,20398,150862,1155953,7379380,48788187, 273307984,1578043496,7881635316,40377942968, 182401018359,842470282449,3486469196480, 14723645176175,56437062063876,220480959884552, 790014974680676] |