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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 0 |
| 6 | 0 |
| 7 | 3 |
| 8 | 10 |
| 9 | 0 |
| 10 | 0 |
| 11 | 76 |
| 12 | 140 |
| 13 | 0 |
| 14 | 0 |
| 15 | 2478 |
| 16 | 5454 |
| 17 | 0 |
| 18 | 0 |
| 19 | 105704 |
| 20 | 267312 |
| 21 | 0 |
| 22 | 0 |
| 23 | 7235244 |
| 24 | 25244832 |
| 25 | 0 |
| 26 | 0 |
| 27 | 709868768 |
| 28 | 2310292004 |
| 29 | 0 |
| 30 | 0 |
| 31 | 91242419796 |
| 32 | 339602328050 |
| 33 | 0 |
| 34 | 0 |
| 35 | 15469115987732 |
| 36 | 54988746724416 |
| 37 | 0 |
| 38 | 0 |
| 39 | 3075508960864496 |
| 40 | 11965953308933012 |
[0,0,1,1,0,0,3,10,0,0,76,140,0,0,2478,5454,0,0, 105704,267312,0,0,7235244,25244832,0,0,709868768, 2310292004,0,0,91242419796,339602328050,0,0, 15469115987732,54988746724416,0,0, 3075508960864496,11965953308933012] |