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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 2 |
| 9 | 18 |
| 10 | 12 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 30 |
| 18 | 136 |
| 19 | 112 |
| 20 | 0 |
| 21 | 0 |
| 22 | 0 |
| 23 | 0 |
| 24 | 0 |
| 25 | 0 |
| 26 | 400 |
| 27 | 1348 |
| 28 | 1352 |
| 29 | 408 |
| 30 | 180 |
| 31 | 120 |
| 32 | 180 |
| 33 | 408 |
| 34 | 1352 |
| 35 | 7356 |
| 36 | 19008 |
| 37 | 23028 |
| 38 | 16788 |
| 39 | 12630 |
| 40 | 11744 |
| 41 | 16742 |
| 42 | 31320 |
| 43 | 70256 |
| 44 | 181106 |
| 45 | 367560 |
| 46 | 503800 |
| 47 | 533504 |
| 48 | 546468 |
| 49 | 623546 |
| 50 | 881384 |
| 51 | 1468398 |
| 52 | 2697374 |
| 53 | 5164896 |
| 54 | 8976002 |
| 55 | 12977384 |
[1,0,0,0,0,0,0,2,18,12,0,0,0,0,0,0,30,136,112,0,0, 0,0,0,0,400,1348,1352,408,180,120,180,408,1352, 7356,19008,23028,16788,12630,11744,16742,31320, 70256,181106,367560,503800,533504,546468,623546, 881384,1468398,2697374,5164896,8976002,12977384] |