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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 36 |
| 7 | 0 |
| 8 | 0 |
| 9 | 168 |
| 10 | 220 |
| 11 | 0 |
| 12 | 0 |
| 13 | 524 |
| 14 | 944 |
| 15 | 1960 |
| 16 | 0 |
| 17 | 0 |
| 18 | 1292 |
| 19 | 2848 |
| 20 | 6752 |
| 21 | 15752 |
| 22 | 0 |
| 23 | 0 |
| 24 | 2736 |
| 25 | 7248 |
| 26 | 20280 |
| 27 | 55904 |
| 28 | 120212 |
| 29 | 0 |
| 30 | 0 |
| 31 | 5088 |
| 32 | 15576 |
| 33 | 48576 |
| 34 | 156224 |
| 35 | 378824 |
| 36 | 1068008 |
[0,0,0,0,0,36,0,0,168,220,0,0,524,944,1960,0,0, 1292,2848,6752,15752,0,0,2736,7248,20280,55904, 120212,0,0,5088,15576,48576,156224,378824,1068008] |