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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | 6 |
| 6 | 0 |
| 7 | 1 |
| 8 | 11 |
| 9 | 54 |
| 10 | 0 |
| 11 | 1 |
| 12 | 20 |
| 13 | 151 |
| 14 | 680 |
| 15 | 0 |
| 16 | 1 |
| 17 | 37 |
| 18 | 413 |
| 19 | 2569 |
| 20 | 11000 |
| 21 | 0 |
| 22 | 1 |
| 23 | 70 |
| 24 | 1128 |
| 25 | 9450 |
| 26 | 52431 |
| 27 | 217392 |
| 28 | 0 |
| 29 | 1 |
| 30 | 135 |
| 31 | 3104 |
| 32 | 34416 |
| 33 | 243255 |
| 34 | 1251921 |
| 35 | 5076400 |
| 36 | 0 |
| 37 | 1 |
| 38 | 264 |
| 39 | 8637 |
| 40 | 125248 |
| 41 | 1113027 |
| 42 | 7025016 |
| 43 | 34282879 |
| 44 | 136761984 |
| 45 | 0 |
| 46 | 1 |
| 47 | 521 |
| 48 | 24327 |
| 49 | 457807 |
| 50 | 5064143 |
| 51 | 38811015 |
| 52 | 225930121 |
| 53 | 1059812993 |
| 54 | 4175432064 |
| 55 | 0 |
| 56 | 1 |
| 57 | 1034 |
| 58 | 69334 |
| 59 | 1685266 |
| 60 | 23031680 |
| 61 | 212609518 |
| 62 | 1465077802 |
| 63 | 8026643702 |
| 64 | 36519075583 |
| 65 | 142469423360 |
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