The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 6 |
| 3 | 2 |
| 4 | 23 |
| 5 | 46 |
| 6 | 3 |
| 7 | 76 |
| 8 | 460 |
| 9 | 228 |
| 10 | 4 |
| 11 | 237 |
| 12 | 3364 |
| 13 | 5046 |
| 14 | 948 |
| 15 | 5 |
| 16 | 722 |
| 17 | 21086 |
| 18 | 70644 |
| 19 | 42172 |
| 20 | 3610 |
| 21 | 6 |
| 22 | 2179 |
| 23 | 121314 |
| 24 | 779169 |
| 25 | 1038892 |
| 26 | 303285 |
| 27 | 13074 |
| 28 | 7 |
| 29 | 6552 |
| 30 | 663224 |
| 31 | 7455864 |
| 32 | 18700056 |
| 33 | 12426440 |
| 34 | 1989672 |
| 35 | 45864 |
| 36 | 8 |
| 37 | 19673 |
| 38 | 3512680 |
| 39 | 65123916 |
| 40 | 277653176 |
[1,6,2,23,46,3,76,460,228,4,237,3364,5046,948,5, 722,21086,70644,42172,3610,6,2179,121314,779169, 1038892,303285,13074,7,6552,663224,7455864, 18700056,12426440,1989672,45864,8,19673,3512680, 65123916,277653176] |