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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 0 |
| 4 | 29 |
| 5 | 2 |
| 6 | 119 |
| 7 | 8 |
| 8 | 469 |
| 9 | 122 |
| 10 | 1679 |
| 11 | 320 |
| 12 | 7101 |
| 13 | 1410 |
| 14 | 26679 |
| 15 | 22280 |
| 16 | 112853 |
| 17 | 1146 |
| 18 | 518799 |
| 19 | 15680 |
| 20 | 1787837 |
| 21 | 43394 |
| 22 | 7163959 |
| 23 | 257800 |
| 24 | 28336341 |
| 25 | 921722 |
| 26 | 114405007 |
| 27 | 2683200 |
| 28 | 458566589 |
| 29 | 33053058 |
| 30 | 1778831415 |
| 31 | 300666632 |
| 32 | 7119306965 |
| 33 | 1712795770 |
| 34 | 25864703631 |
[1,2,7,0,29,2,119,8,469,122,1679,320,7101,1410, 26679,22280,112853,1146,518799,15680,1787837, 43394,7163959,257800,28336341,921722,114405007, 2683200,458566589,33053058,1778831415,300666632, 7119306965,1712795770,25864703631] |