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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 7 |
| 6 | 0 |
| 7 | 20 |
| 8 | 3 |
| 9 | 10 |
| 10 | 2 |
| 11 | 143 |
| 12 | 2 |
| 13 | 376 |
| 14 | 5 |
| 15 | 11 |
| 16 | 21 |
| 17 | 2583 |
| 18 | 6 |
| 19 | 6764 |
| 20 | 15 |
| 21 | 74 |
| 22 | 34 |
| 23 | 46367 |
| 24 | 18 |
| 25 | 7435 |
| 26 | 89 |
| 27 | 2618 |
| 28 | 104 |
| 29 | 832039 |
| 30 | 25 |
| 31 | 2178308 |
| 32 | 987 |
| 33 | 3399 |
| 34 | 610 |
| 35 | 20160 |
| 36 | 136 |
| 37 | 39088168 |
| 38 | 1597 |
| 39 | 23228 |
| 40 | 861 |
| 41 | 267914295 |
| 42 | 182 |
| 43 | 701408732 |
| 44 | 4895 |
| 45 | 35920 |
| 46 | 10946 |
| 47 | 4807526975 |
[0,0,1,2,1,7,0,20,3,10,2,143,2,376,5,11,21,2583,6, 6764,15,74,34,46367,18,7435,89,2618,104,832039,25, 2178308,987,3399,610,20160,136,39088168,1597, 23228,861,267914295,182,701408732,4895,35920, 10946,4807526975] |