The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 53 |
| 3 | 14 |
| 4 | 43 |
| 5 | 61 |
| 6 | 131 |
| 7 | 242 |
| 8 | 530 |
| 9 | 1226 |
| 10 | 2701 |
| 11 | 5847 |
| 12 | 13187 |
| 13 | 30316 |
| 14 | 68963 |
| 15 | 156767 |
| 16 | 358341 |
| 17 | 819778 |
| 18 | 1874460 |
| 19 | 4286961 |
| 20 | 9812357 |
| 21 | 22469334 |
| 22 | 51467291 |
| 23 | 117908386 |
| 24 | 270171681 |
| 25 | 619170983 |
| 26 | 1419191326 |
| 27 | 3253216738 |
| 28 | 7458029458 |
| 29 | 17098984111 |
[1,53,14,43,61,131,242,530,1226,2701,5847,13187, 30316,68963,156767,358341,819778,1874460,4286961, 9812357,22469334,51467291,117908386,270171681, 619170983,1419191326,3253216738,7458029458, 17098984111] |