| n | a(n) |
|---|---|
| 0 | 1 |
| 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 | 1533 |
| 14 | 6570 |
| 15 | 19272 |
| 16 | 69861 |
| 17 | 266085 |
| 18 | 827820 |
| 19 | 2292200 |
| 20 | 6188940 |
| 21 | 15841584 |
| 22 | 37443744 |
| 23 | 82642716 |
| 24 | 172172325 |
| 25 | 337713987 |
| 26 | 623471976 |
| 27 | 1086405418 |
| 28 | 1784808901 |
| 29 | 2766489030 |
| 30 | 4057517244 |
| 31 | 5630090544 |
[1,0,0,0,0,0,0,0,0,0,0,0,0,1533,6570,19272,69861, 266085,827820,2292200,6188940,15841584,37443744, 82642716,172172325,337713987,623471976,1086405418, 1784808901,2766489030,4057517244,5630090544] |