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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 0 |
| 18 | 0 |
| 19 | 0 |
| 20 | 0 |
| 21 | 0 |
| 22 | 0 |
| 23 | 0 |
| 24 | 0 |
| 25 | 0 |
| 26 | 0 |
| 27 | 0 |
| 28 | 0 |
| 29 | 0 |
| 30 | 0 |
| 31 | 0 |
| 32 | 0 |
| 33 | 0 |
| 34 | 0 |
| 35 | 7 |
| 36 | 27 |
| 37 | 127 |
| 38 | 401 |
| 39 | 1319 |
| 40 | 3824 |
| 41 | 11000 |
| 42 | 29947 |
| 43 | 80583 |
| 44 | 210386 |
| 45 | 542760 |
| 46 | 1374466 |
| 47 | 3441750 |
| 48 | 8503628 |
| 49 | 20797570 |
| 50 | 50315286 |
| 51 | 120597234 |
| 52 | 286334504 |
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,7,27,127,401,1319,3824,11000, 29947,80583,210386,542760,1374466,3441750,8503628, 20797570,50315286,120597234,286334504] |