The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 1 |
| 3 | 12 |
| 4 | 3 |
| 5 | 1 |
| 6 | 76 |
| 7 | 15 |
| 8 | 3 |
| 9 | 1 |
| 10 | 711 |
| 11 | 118 |
| 12 | 18 |
| 13 | 3 |
| 14 | 1 |
| 15 | 9054 |
| 16 | 1317 |
| 17 | 169 |
| 18 | 21 |
| 19 | 3 |
| 20 | 1 |
| 21 | 147471 |
| 22 | 19311 |
| 23 | 2190 |
| 24 | 229 |
| 25 | 24 |
| 26 | 3 |
| 27 | 1 |
| 28 | 2938176 |
| 29 | 352636 |
| 30 | 36360 |
| 31 | 3378 |
| 32 | 298 |
| 33 | 27 |
| 34 | 3 |
| 35 | 1 |
| 36 | 69328365 |
| 37 | 7722840 |
| 38 | 737051 |
| 39 | 62655 |
| 40 | 4929 |
| 41 | 376 |
| 42 | 30 |
| 43 | 3 |
| 44 | 1 |
| 45 | 1891371807 |
| 46 | 197354133 |
| 47 | 17645187 |
[1,3,1,12,3,1,76,15,3,1,711,118,18,3,1,9054,1317, 169,21,3,1,147471,19311,2190,229,24,3,1,2938176, 352636,36360,3378,298,27,3,1,69328365,7722840, 737051,62655,4929,376,30,3,1,1891371807,197354133, 17645187] |