The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 1 |
| 3 | 5 |
| 4 | 6 |
| 5 | 1 |
| 6 | 23 |
| 7 | 51 |
| 8 | 18 |
| 9 | 1 |
| 10 | 239 |
| 11 | 861 |
| 12 | 477 |
| 13 | 54 |
| 14 | 1 |
| 15 | 5828 |
| 16 | 32856 |
| 17 | 25263 |
| 18 | 4347 |
| 19 | 162 |
| 20 | 1 |
| 21 | 342383 |
| 22 | 3013980 |
| 23 | 3016107 |
| 24 | 699813 |
| 25 | 39285 |
| 26 | 486 |
| 27 | 1 |
| 28 | 50110484 |
| 29 | 690729981 |
| 30 | 865184724 |
| 31 | 253656252 |
| 32 | 19053063 |
| 33 | 354051 |
| 34 | 1458 |
| 35 | 1 |
| 36 | 18757984046 |
| 37 | 406279238154 |
[1,2,1,5,6,1,23,51,18,1,239,861,477,54,1,5828, 32856,25263,4347,162,1,342383,3013980,3016107, 699813,39285,486,1,50110484,690729981,865184724, 253656252,19053063,354051,1458,1,18757984046, 406279238154] |