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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 4 |
| 3 | 1 |
| 4 | 1 |
| 5 | 12 |
| 6 | 27 |
| 7 | 12 |
| 8 | 1 |
| 9 | 1 |
| 10 | 24 |
| 11 | 134 |
| 12 | 236 |
| 13 | 134 |
| 14 | 24 |
| 15 | 1 |
| 16 | 1 |
| 17 | 40 |
| 18 | 410 |
| 19 | 1540 |
| 20 | 2380 |
| 21 | 1540 |
| 22 | 410 |
| 23 | 40 |
| 24 | 1 |
| 25 | 1 |
| 26 | 60 |
| 27 | 975 |
| 28 | 6260 |
| 29 | 18386 |
| 30 | 26216 |
| 31 | 18386 |
| 32 | 6260 |
| 33 | 975 |
| 34 | 60 |
| 35 | 1 |
| 36 | 1 |
| 37 | 84 |
| 38 | 1981 |
| 39 | 19320 |
| 40 | 91441 |
| 41 | 227052 |
| 42 | 306495 |
| 43 | 227052 |
| 44 | 91441 |
| 45 | 19320 |
| 46 | 1981 |
| 47 | 84 |
| 48 | 1 |
| 49 | 1 |
| 50 | 112 |
| 51 | 3612 |
| 52 | 49672 |
[1,1,4,1,1,12,27,12,1,1,24,134,236,134,24,1,1,40, 410,1540,2380,1540,410,40,1,1,60,975,6260,18386, 26216,18386,6260,975,60,1,1,84,1981,19320,91441, 227052,306495,227052,91441,19320,1981,84,1,1,112, 3612,49672] |