The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 2 |
| 3 | 5 |
| 4 | 3 |
| 5 | 16 |
| 6 | 2 |
| 7 | 45 |
| 8 | 7 |
| 9 | 23 |
| 10 | 4 |
| 11 | 320 |
| 12 | 5 |
| 13 | 841 |
| 14 | 11 |
| 15 | 25 |
| 16 | 47 |
| 17 | 5776 |
| 18 | 14 |
| 19 | 15125 |
| 20 | 34 |
| 21 | 166 |
| 22 | 76 |
| 23 | 103680 |
| 24 | 41 |
| 25 | 16626 |
| 26 | 199 |
| 27 | 5855 |
| 28 | 233 |
| 29 | 1860496 |
| 30 | 56 |
| 31 | 4870845 |
| 32 | 2207 |
| 33 | 7601 |
| 34 | 1364 |
| 35 | 45080 |
| 36 | 305 |
| 37 | 87403801 |
| 38 | 3571 |
| 39 | 51940 |
| 40 | 1926 |
| 41 | 599074576 |
| 42 | 407 |
| 43 | 1568397605 |
| 44 | 10946 |
| 45 | 80320 |
[1,0,2,5,3,16,2,45,7,23,4,320,5,841,11,25,47,5776, 14,15125,34,166,76,103680,41,16626,199,5855,233, 1860496,56,4870845,2207,7601,1364,45080,305, 87403801,3571,51940,1926,599074576,407,1568397605, 10946,80320] |