The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 514920 |
| 2 | 1293242 |
| 3 | 3917190 |
| 4 | 13233402 |
| 5 | 36423140 |
| 6 | 115919394 |
| 7 | 356678661 |
| 8 | 1013024839 |
| 9 | 2950063325 |
| 10 | 8706010338 |
| 11 | 24924494772 |
| 12 | 71250809523 |
| 13 | 201815907569 |
| 14 | 564593588950 |
| 15 | 1576308803788 |
| 16 | 4393237742809 |
| 17 | 12206840093658 |
| 18 | 33862403008984 |
[514920,1293242,3917190,13233402,36423140, 115919394,356678661,1013024839,2950063325, 8706010338,24924494772,71250809523,201815907569, 564593588950,1576308803788,4393237742809, 12206840093658,33862403008984] |