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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 0 |
| 7 | 0 |
| 8 | 1 |
| 9 | 6 |
| 10 | 1 |
| 11 | 0 |
| 12 | 1 |
| 13 | 15 |
| 14 | 15 |
| 15 | 1 |
| 16 | 1 |
| 17 | 28 |
| 18 | 70 |
| 19 | 28 |
| 20 | 2 |
| 21 | 45 |
| 22 | 210 |
| 23 | 210 |
| 24 | 46 |
| 25 | 67 |
| 26 | 495 |
| 27 | 924 |
| 28 | 496 |
| 29 | 157 |
| 30 | 1002 |
| 31 | 3003 |
| 32 | 3004 |
| 33 | 1121 |
| 34 | 1911 |
| 35 | 8009 |
| 36 | 12871 |
| 37 | 8161 |
| 38 | 4880 |
| 39 | 18684 |
| 40 | 43760 |
| 41 | 43948 |
| 42 | 23409 |
| 43 | 41820 |
| 44 | 126124 |
| 45 | 184988 |
| 46 | 133285 |
| 47 | 113373 |
| 48 | 324616 |
| 49 | 647112 |
| 50 | 657273 |
| 51 | 454366 |
[1,0,0,0,1,1,0,0,1,6,1,0,1,15,15,1,1,28,70,28,2, 45,210,210,46,67,495,924,496,157,1002,3003,3004, 1121,1911,8009,12871,8161,4880,18684,43760,43948, 23409,41820,126124,184988,133285,113373,324616, 647112,657273,454366] |