The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 114 |
| 3 | 1595 |
| 4 | 24195 |
| 5 | 190463 |
| 6 | 4613167 |
| 7 | 23815950 |
| 8 | 240951477 |
| 9 | 2448240688 |
| 10 | 40379465440 |
| 11 | 258630935725 |
| 12 | 3044619003271 |
| 13 | 26232953378021 |
| 14 | 264066033166293 |
| 15 | 3218396161633945 |
| 16 | 29248021240625765 |
| 17 | 302064442857973298 |
| 18 | 3027736057187540859 |
| 19 | 32207709908667683204 |
[4,114,1595,24195,190463,4613167,23815950, 240951477,2448240688,40379465440,258630935725, 3044619003271,26232953378021,264066033166293, 3218396161633945,29248021240625765, 302064442857973298,3027736057187540859, 32207709908667683204] |