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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 6 |
| 6 | 0 |
| 7 | 6 |
| 8 | 32 |
| 9 | 20 |
| 10 | 0 |
| 11 | 20 |
| 12 | 657 |
| 13 | 2438 |
| 14 | 685 |
| 15 | 0 |
| 16 | 20 |
| 17 | 7546 |
| 18 | 126947 |
| 19 | 125094 |
| 20 | 5370 |
| 21 | 0 |
| 22 | 70 |
| 23 | 124363 |
| 24 | 6363724 |
| 25 | 27397461 |
| 26 | 6821264 |
| 27 | 123410 |
| 28 | 0 |
| 29 | 685 |
| 30 | 1710608 |
| 31 | 390671426 |
| 32 | 5989744766 |
| 33 | 6178897165 |
| 34 | 413021606 |
| 35 | 1341616 |
| 36 | 0 |
| 37 | 2808 |
| 38 | 26389570 |
| 39 | 20825891902 |
[1,0,0,0,6,0,6,32,20,0,20,657,2438,685,0,20,7546, 126947,125094,5370,0,70,124363,6363724,27397461, 6821264,123410,0,685,1710608,390671426,5989744766, 6178897165,413021606,1341616,0,2808,26389570, 20825891902] |