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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 13 |
| 6 | 0 |
| 7 | 0 |
| 8 | 85 |
| 9 | 85 |
| 10 | 0 |
| 11 | 0 |
| 12 | 758 |
| 13 | 1828 |
| 14 | 758 |
| 15 | 0 |
| 16 | 0 |
| 17 | 5736 |
| 18 | 49197 |
| 19 | 49197 |
| 20 | 5736 |
| 21 | 0 |
| 22 | 0 |
| 23 | 44186 |
| 24 | 1160820 |
| 25 | 4072557 |
| 26 | 1160820 |
| 27 | 44186 |
| 28 | 0 |
| 29 | 0 |
| 30 | 335511 |
| 31 | 27492106 |
| 32 | 290087988 |
| 33 | 290087988 |
| 34 | 27492106 |
| 35 | 335511 |
| 36 | 0 |
| 37 | 0 |
| 38 | 2551999 |
| 39 | 645919942 |
| 40 | 20842593371 |
[0,0,0,0,13,0,0,85,85,0,0,758,1828,758,0,0,5736, 49197,49197,5736,0,0,44186,1160820,4072557, 1160820,44186,0,0,335511,27492106,290087988, 290087988,27492106,335511,0,0,2551999,645919942, 20842593371] |