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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 | 2 |
| 34 | 11 |
| 35 | 51 |
| 36 | 192 |
| 37 | 661 |
| 38 | 2093 |
| 39 | 6309 |
| 40 | 18216 |
| 41 | 51010 |
| 42 | 139094 |
| 43 | 371303 |
| 44 | 972748 |
| 45 | 2507744 |
| 46 | 6371523 |
| 47 | 15977886 |
| 48 | 39585753 |
| 49 | 96982448 |
| 50 | 235110291 |
| 51 | 564332517 |
| 52 | 1341813900 |
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,2,11,51,192,661,2093,6309,18216, 51010,139094,371303,972748,2507744,6371523, 15977886,39585753,96982448,235110291,564332517, 1341813900] |