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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | 3 |
| 6 | 1 |
| 7 | 0 |
| 8 | 0 |
| 9 | 6 |
| 10 | 17 |
| 11 | 15 |
| 12 | 6 |
| 13 | 1 |
| 14 | 0 |
| 15 | 0 |
| 16 | 3 |
| 17 | 46 |
| 18 | 150 |
| 19 | 228 |
| 20 | 206 |
| 21 | 120 |
| 22 | 45 |
| 23 | 10 |
| 24 | 1 |
| 25 | 0 |
| 26 | 0 |
| 27 | 0 |
| 28 | 45 |
| 29 | 465 |
| 30 | 1803 |
| 31 | 3965 |
| 32 | 5835 |
| 33 | 6210 |
| 34 | 4955 |
| 35 | 2998 |
| 36 | 1365 |
| 37 | 455 |
| 38 | 105 |
| 39 | 15 |
| 40 | 1 |
| 41 | 0 |
| 42 | 0 |
| 43 | 0 |
| 44 | 15 |
| 45 | 645 |
| 46 | 5991 |
| 47 | 27364 |
| 48 | 79470 |
| 49 | 165555 |
| 50 | 264050 |
| 51 | 334713 |
| 52 | 344526 |
| 53 | 291200 |
| 54 | 202860 |
| 55 | 116190 |
| 56 | 54258 |
| 57 | 20349 |
| 58 | 5985 |
| 59 | 1330 |
| 60 | 210 |
| 61 | 21 |
| 62 | 1 |
[1,0,1,0,1,3,1,0,0,6,17,15,6,1,0,0,3,46,150,228, 206,120,45,10,1,0,0,0,45,465,1803,3965,5835,6210, 4955,2998,1365,455,105,15,1,0,0,0,15,645,5991, 27364,79470,165555,264050,334713,344526,291200, 202860,116190,54258,20349,5985,1330,210,21,1] |