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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 12 |
| 7 | 6 |
| 8 | 26 |
| 9 | 31 |
| 10 | 58 |
| 11 | 24 |
| 12 | 480 |
| 13 | 51 |
| 14 | 304 |
| 15 | 851 |
| 16 | 1537 |
| 17 | 251 |
| 18 | 6028 |
| 19 | 2466 |
| 20 | 13789 |
| 21 | 12657 |
| 22 | 8870 |
| 23 | 3121 |
| 24 | 222384 |
| 25 | 100805 |
| 26 | 49405 |
| 27 | 290641 |
| 28 | 536006 |
| 29 | 42613 |
| 30 | 2666244 |
| 31 | 446497 |
| 32 | 3716882 |
| 33 | 3111635 |
| 34 | 1694821 |
| 35 | 10652139 |
| 36 | 76062672 |
| 37 | 16224451 |
| 38 | 27896232 |
| 39 | 51359105 |
| 40 | 282500593 |
[0,0,0,1,2,3,12,6,26,31,58,24,480,51,304,851,1537, 251,6028,2466,13789,12657,8870,3121,222384,100805, 49405,290641,536006,42613,2666244,446497,3716882, 3111635,1694821,10652139,76062672,16224451, 27896232,51359105,282500593] |