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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 1 |
| 7 | 4 |
| 8 | 2 |
| 9 | 9 |
| 10 | 3 |
| 11 | 20 |
| 12 | 6 |
| 13 | 46 |
| 14 | 11 |
| 15 | 106 |
| 16 | 23 |
| 17 | 248 |
| 18 | 46 |
| 19 | 582 |
| 20 | 98 |
| 21 | 1376 |
| 22 | 207 |
| 23 | 3264 |
| 24 | 451 |
| 25 | 7777 |
| 26 | 983 |
| 27 | 18581 |
| 28 | 2179 |
| 29 | 44526 |
| 30 | 4850 |
| 31 | 106936 |
| 32 | 10905 |
| 33 | 257379 |
| 34 | 24631 |
| 35 | 620577 |
| 36 | 56011 |
| 37 | 1498788 |
| 38 | 127912 |
| 39 | 3625026 |
| 40 | 293547 |
| 41 | 8779271 |
| 42 | 676157 |
| 43 | 21287278 |
| 44 | 1563372 |
| 45 | 51671864 |
| 46 | 3626149 |
| 47 | 125550018 |
[1,1,1,1,2,1,4,2,9,3,20,6,46,11,106,23,248,46,582, 98,1376,207,3264,451,7777,983,18581,2179,44526, 4850,106936,10905,257379,24631,620577,56011, 1498788,127912,3625026,293547,8779271,676157, 21287278,1563372,51671864,3626149,125550018] |