The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 145 |
| 3 | 3145 |
| 4 | 58639 |
| 5 | 1210968 |
| 6 | 24281566 |
| 7 | 482839574 |
| 8 | 9688062164 |
| 9 | 194158517334 |
| 10 | 3887864391419 |
| 11 | 77882274874621 |
| 12 | 1560086250583302 |
| 13 | 31249383701318779 |
| 14 | 625956152664072444 |
| 15 | 12538492197520048383 |
| 16 | 251157344451183972038 |
[6,145,3145,58639,1210968,24281566,482839574, 9688062164,194158517334,3887864391419, 77882274874621,1560086250583302,31249383701318779, 625956152664072444,12538492197520048383, 251157344451183972038] |