The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 29 |
| 2 | 117 |
| 3 | 406 |
| 4 | 1236 |
| 5 | 3486 |
| 6 | 9301 |
| 7 | 23663 |
| 8 | 58115 |
| 9 | 138690 |
| 10 | 323840 |
| 11 | 742851 |
| 12 | 1679010 |
| 13 | 3749771 |
| 14 | 8289248 |
| 15 | 18168895 |
| 16 | 39536497 |
| 17 | 85496710 |
| 18 | 183891668 |
| 19 | 393668931 |
| 20 | 839245009 |
| 21 | 1782590609 |
| 22 | 3773864595 |
| 23 | 7965997430 |
| 24 | 16770228087 |
| 25 | 35219988730 |
[29,117,406,1236,3486,9301,23663,58115,138690, 323840,742851,1679010,3749771,8289248,18168895, 39536497,85496710,183891668,393668931,839245009, 1782590609,3773864595,7965997430,16770228087, 35219988730] |