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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 0 |
| 6 | 1 |
| 7 | 0 |
| 8 | 1 |
| 9 | 0 |
| 10 | 1 |
| 11 | 3 |
| 12 | 0 |
| 13 | 1 |
| 14 | 7 |
| 15 | 0 |
| 16 | 1 |
| 17 | 12 |
| 18 | 0 |
| 19 | 1 |
| 20 | 18 |
| 21 | 12 |
| 22 | 0 |
| 23 | 1 |
| 24 | 25 |
| 25 | 45 |
| 26 | 0 |
| 27 | 1 |
| 28 | 33 |
| 29 | 110 |
| 30 | 0 |
| 31 | 1 |
| 32 | 42 |
| 33 | 220 |
| 34 | 55 |
| 35 | 0 |
| 36 | 1 |
| 37 | 52 |
| 38 | 390 |
| 39 | 286 |
| 40 | 0 |
| 41 | 1 |
| 42 | 63 |
| 43 | 637 |
| 44 | 910 |
| 45 | 0 |
| 46 | 1 |
| 47 | 75 |
| 48 | 980 |
| 49 | 2275 |
| 50 | 273 |
| 51 | 0 |
| 52 | 1 |
| 53 | 88 |
| 54 | 1440 |
| 55 | 4900 |
| 56 | 1820 |
| 57 | 0 |
| 58 | 1 |
| 59 | 102 |
| 60 | 2040 |
| 61 | 9520 |
| 62 | 7140 |
| 63 | 0 |
| 64 | 1 |
| 65 | 117 |
| 66 | 2805 |
| 67 | 17136 |
| 68 | 21420 |
| 69 | 1428 |
[1,0,0,0,1,0,1,0,1,0,1,3,0,1,7,0,1,12,0,1,18,12,0, 1,25,45,0,1,33,110,0,1,42,220,55,0,1,52,390,286,0, 1,63,637,910,0,1,75,980,2275,273,0,1,88,1440,4900, 1820,0,1,102,2040,9520,7140,0,1,117,2805,17136, 21420,1428] |