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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 10 |
| 7 | 11 |
| 8 | 3 |
| 9 | 59 |
| 10 | 36 |
| 11 | 25 |
| 12 | 363 |
| 13 | 212 |
| 14 | 130 |
| 15 | 15 |
| 16 | 2491 |
| 17 | 1688 |
| 18 | 651 |
| 19 | 210 |
| 20 | 19661 |
| 21 | 14317 |
| 22 | 4487 |
| 23 | 1750 |
| 24 | 105 |
| 25 | 176536 |
| 26 | 129076 |
| 27 | 42435 |
| 28 | 12628 |
| 29 | 2205 |
| 30 | 1767540 |
| 31 | 1277159 |
| 32 | 451626 |
| 33 | 104755 |
| 34 | 26775 |
| 35 | 945 |
| 36 | 19460671 |
| 37 | 13974236 |
| 38 | 5068723 |
| 39 | 1120570 |
| 40 | 264880 |
| 41 | 27720 |
[1,1,1,1,2,4,10,11,3,59,36,25,363,212,130,15,2491, 1688,651,210,19661,14317,4487,1750,105,176536, 129076,42435,12628,2205,1767540,1277159,451626, 104755,26775,945,19460671,13974236,5068723, 1120570,264880,27720] |