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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 1 |
| 9 | 1 |
| 10 | 0 |
| 11 | 0 |
| 12 | 5 |
| 13 | 20 |
| 14 | 5 |
| 15 | 0 |
| 16 | 0 |
| 17 | 28 |
| 18 | 270 |
| 19 | 270 |
| 20 | 28 |
| 21 | 0 |
| 22 | 0 |
| 23 | 145 |
| 24 | 2763 |
| 25 | 5988 |
| 26 | 2763 |
| 27 | 145 |
| 28 | 0 |
| 29 | 0 |
| 30 | 703 |
| 31 | 26662 |
| 32 | 113984 |
| 33 | 113984 |
| 34 | 26662 |
| 35 | 703 |
| 36 | 0 |
| 37 | 0 |
| 38 | 3288 |
| 39 | 241796 |
| 40 | 2032993 |
| 41 | 4069571 |
| 42 | 2032993 |
| 43 | 241796 |
| 44 | 3288 |
| 45 | 0 |
| 46 | 0 |
| 47 | 14980 |
| 48 | 2115564 |
| 49 | 34279720 |
| 50 | 136572268 |
[0,0,0,0,0,0,0,1,1,0,0,5,20,5,0,0,28,270,270,28,0, 0,145,2763,5988,2763,145,0,0,703,26662,113984, 113984,26662,703,0,0,3288,241796,2032993,4069571, 2032993,241796,3288,0,0,14980,2115564,34279720, 136572268] |