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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 0 |
| 7 | 0 |
| 8 | 3 |
| 9 | 3 |
| 10 | 0 |
| 11 | 0 |
| 12 | 6 |
| 13 | 8 |
| 14 | 6 |
| 15 | 0 |
| 16 | 0 |
| 17 | 17 |
| 18 | 26 |
| 19 | 26 |
| 20 | 17 |
| 21 | 0 |
| 22 | 0 |
| 23 | 41 |
| 24 | 138 |
| 25 | 125 |
| 26 | 138 |
| 27 | 41 |
| 28 | 0 |
| 29 | 0 |
| 30 | 104 |
| 31 | 611 |
| 32 | 1218 |
| 33 | 1218 |
| 34 | 611 |
| 35 | 104 |
| 36 | 0 |
| 37 | 0 |
| 38 | 261 |
| 39 | 2880 |
| 40 | 8617 |
| 41 | 20959 |
| 42 | 8617 |
| 43 | 2880 |
| 44 | 261 |
| 45 | 0 |
| 46 | 0 |
| 47 | 655 |
| 48 | 13727 |
| 49 | 71334 |
| 50 | 285085 |
| 51 | 285085 |
| 52 | 71334 |
| 53 | 13727 |
| 54 | 655 |
| 55 | 0 |
| 56 | 0 |
| 57 | 1646 |
| 58 | 65070 |
| 59 | 577595 |
| 60 | 4228781 |
[0,0,0,0,1,0,0,3,3,0,0,6,8,6,0,0,17,26,26,17,0,0, 41,138,125,138,41,0,0,104,611,1218,1218,611,104,0, 0,261,2880,8617,20959,8617,2880,261,0,0,655,13727, 71334,285085,285085,71334,13727,655,0,0,1646, 65070,577595,4228781] |