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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 6 |
| 3 | 1 |
| 4 | 20 |
| 5 | 20 |
| 6 | 1 |
| 7 | 52 |
| 8 | 139 |
| 9 | 68 |
| 10 | 1 |
| 11 | 140 |
| 12 | 735 |
| 13 | 1032 |
| 14 | 240 |
| 15 | 1 |
| 16 | 392 |
| 17 | 4103 |
| 18 | 11206 |
| 19 | 7821 |
| 20 | 832 |
| 21 | 1 |
| 22 | 1117 |
| 23 | 24153 |
| 24 | 130041 |
| 25 | 167348 |
| 26 | 58589 |
| 27 | 2896 |
| 28 | 1 |
| 29 | 3155 |
| 30 | 137703 |
| 31 | 1605061 |
| 32 | 3932500 |
| 33 | 2495425 |
| 34 | 440001 |
| 35 | 10080 |
| 36 | 1 |
| 37 | 8845 |
| 38 | 781453 |
| 39 | 18898817 |
| 40 | 101336088 |
| 41 | 119041793 |
[1,6,1,20,20,1,52,139,68,1,140,735,1032,240,1,392, 4103,11206,7821,832,1,1117,24153,130041,167348, 58589,2896,1,3155,137703,1605061,3932500,2495425, 440001,10080,1,8845,781453,18898817,101336088, 119041793] |