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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 0 |
| 18 | 0 |
| 19 | 0 |
| 20 | 0 |
| 21 | 0 |
| 22 | 0 |
| 23 | 0 |
| 24 | 1 |
| 25 | 2 |
| 26 | 16 |
| 27 | 46 |
| 28 | 143 |
| 29 | 412 |
| 30 | 941 |
| 31 | 2788 |
| 32 | 7941 |
| 33 | 22413 |
| 34 | 62273 |
| 35 | 172330 |
| 36 | 466508 |
| 37 | 1239742 |
| 38 | 3257378 |
| 39 | 8430928 |
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1, 2,16,46,143,412,941,2788,7941,22413,62273,172330, 466508,1239742,3257378,8430928] |