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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 3 |
| 7 | 2 |
| 8 | 26 |
| 9 | 18 |
| 10 | 16 |
| 11 | 9 |
| 12 | 139 |
| 13 | 550 |
| 14 | 232 |
| 15 | 125 |
| 16 | 29 |
| 17 | 765 |
| 18 | 8812 |
| 19 | 9808 |
| 20 | 2764 |
| 21 | 1296 |
| 22 | 79 |
| 23 | 6221 |
| 24 | 121819 |
| 25 | 398508 |
| 26 | 290140 |
| 27 | 34471 |
| 28 | 16807 |
| 29 | 220 |
| 30 | 46898 |
| 31 | 1630672 |
| 32 | 17481072 |
| 33 | 22533687 |
| 34 | 8526762 |
| 35 | 448920 |
| 36 | 262144 |
| 37 | 673 |
| 38 | 292690 |
| 39 | 25855219 |
| 40 | 593770274 |
| 41 | 2002867877 |
[1,1,1,1,3,3,2,26,18,16,9,139,550,232,125,29,765, 8812,9808,2764,1296,79,6221,121819,398508,290140, 34471,16807,220,46898,1630672,17481072,22533687, 8526762,448920,262144,673,292690,25855219, 593770274,2002867877] |