The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 7 |
| 6 | 1 |
| 7 | 14 |
| 8 | 3 |
| 9 | 31 |
| 10 | 6 |
| 11 | 66 |
| 12 | 16 |
| 13 | 141 |
| 14 | 44 |
| 15 | 313 |
| 16 | 107 |
| 17 | 3 |
| 18 | 702 |
| 19 | 262 |
| 20 | 14 |
| 21 | 1577 |
| 22 | 663 |
| 23 | 43 |
| 24 | 3581 |
| 25 | 1654 |
| 26 | 138 |
| 27 | 8207 |
| 28 | 4091 |
| 29 | 436 |
| 30 | 1 |
| 31 | 18903 |
| 32 | 10178 |
| 33 | 1275 |
| 34 | 16 |
| 35 | 43770 |
| 36 | 25339 |
| 37 | 3638 |
| 38 | 85 |
| 39 | 101903 |
| 40 | 62952 |
| 41 | 10316 |
| 42 | 331 |
| 43 | 238282 |
| 44 | 156495 |
| 45 | 28743 |
| 46 | 1228 |
| 47 | 559322 |
| 48 | 389374 |
| 49 | 78979 |
| 50 | 4320 |
| 51 | 9 |
[1,1,1,2,4,7,1,14,3,31,6,66,16,141,44,313,107,3, 702,262,14,1577,663,43,3581,1654,138,8207,4091, 436,1,18903,10178,1275,16,43770,25339,3638,85, 101903,62952,10316,331,238282,156495,28743,1228, 559322,389374,78979,4320,9] |