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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 4 |
| 6 | 12 |
| 7 | 9 |
| 8 | 33 |
| 9 | 50 |
| 10 | 78 |
| 11 | 99 |
| 12 | 173 |
| 13 | 264 |
| 14 | 658 |
| 15 | 570 |
| 16 | 1056 |
| 17 | 1099 |
| 18 | 4113 |
| 19 | 2443 |
| 20 | 10129 |
| 21 | 18866 |
| 22 | 23226 |
| 23 | 39775 |
| 24 | 102665 |
| 25 | 171529 |
| 26 | 256039 |
| 27 | 610467 |
| 28 | 815809 |
| 29 | 1795028 |
| 30 | 3854202 |
| 31 | 3044396 |
| 32 | 10752800 |
| 33 | 5509162 |
| 34 | 22665306 |
| 35 | 25847226 |
| 36 | 66558954 |
| 37 | 25219183 |
| 38 | 167266731 |
| 39 | 264535960 |
| 40 | 163511658 |
| 41 | 346473322 |
| 42 | 1109093102 |
[1,1,2,4,4,12,9,33,50,78,99,173,264,658,570,1056, 1099,4113,2443,10129,18866,23226,39775,102665, 171529,256039,610467,815809,1795028,3854202, 3044396,10752800,5509162,22665306,25847226, 66558954,25219183,167266731,264535960,163511658, 346473322,1109093102] |