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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 6 |
| 4 | 10 |
| 5 | 20 |
| 6 | 0 |
| 7 | 28 |
| 8 | 44 |
| 9 | 0 |
| 10 | 0 |
| 11 | 88 |
| 12 | 0 |
| 13 | 104 |
| 14 | 0 |
| 15 | 0 |
| 16 | 136 |
| 17 | 272 |
| 18 | 0 |
| 19 | 304 |
| 20 | 0 |
| 21 | 0 |
| 22 | 0 |
| 23 | 368 |
| 24 | 0 |
| 25 | 0 |
| 26 | 0 |
| 27 | 0 |
| 28 | 0 |
| 29 | 464 |
| 30 | 0 |
| 31 | 496 |
| 32 | 592 |
| 33 | 0 |
| 34 | 0 |
| 35 | 0 |
| 36 | 0 |
| 37 | 1184 |
| 38 | 0 |
| 39 | 0 |
| 40 | 0 |
| 41 | 1312 |
| 42 | 0 |
| 43 | 1376 |
| 44 | 0 |
| 45 | 0 |
| 46 | 0 |
| 47 | 1504 |
| 48 | 0 |
| 49 | 0 |
| 50 | 0 |
| 51 | 0 |
| 52 | 0 |
| 53 | 1696 |
| 54 | 0 |
| 55 | 0 |
| 56 | 0 |
| 57 | 0 |
| 58 | 0 |
| 59 | 1888 |
| 60 | 0 |
| 61 | 1952 |
| 62 | 0 |
| 63 | 0 |
| 64 | 2144 |
| 65 | 0 |
| 66 | 0 |
| 67 | 4288 |
| 68 | 0 |
| 69 | 0 |
| 70 | 0 |
| 71 | 4544 |
[0,1,6,10,20,0,28,44,0,0,88,0,104,0,0,136,272,0, 304,0,0,0,368,0,0,0,0,0,464,0,496,592,0,0,0,0, 1184,0,0,0,1312,0,1376,0,0,0,1504,0,0,0,0,0,1696, 0,0,0,0,0,1888,0,1952,0,0,2144,0,0,4288,0,0,0, 4544] |