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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 4 |
| 4 | 4 |
| 5 | 10 |
| 6 | 47 |
| 7 | 10 |
| 8 | 20 |
| 9 | 240 |
| 10 | 240 |
| 11 | 20 |
| 12 | 35 |
| 13 | 831 |
| 14 | 2246 |
| 15 | 831 |
| 16 | 35 |
| 17 | 56 |
| 18 | 2282 |
| 19 | 12656 |
| 20 | 12656 |
| 21 | 2282 |
| 22 | 56 |
| 23 | 84 |
| 24 | 5362 |
| 25 | 52164 |
| 26 | 109075 |
| 27 | 52164 |
| 28 | 5362 |
| 29 | 84 |
| 30 | 120 |
| 31 | 11256 |
| 32 | 173776 |
| 33 | 648792 |
| 34 | 648792 |
| 35 | 173776 |
| 36 | 11256 |
| 37 | 120 |
| 38 | 165 |
| 39 | 21690 |
| 40 | 495820 |
| 41 | 2978245 |
| 42 | 5360286 |
| 43 | 2978245 |
| 44 | 495820 |
| 45 | 21690 |
| 46 | 165 |
[1,4,4,10,47,10,20,240,240,20,35,831,2246,831,35, 56,2282,12656,12656,2282,56,84,5362,52164,109075, 52164,5362,84,120,11256,173776,648792,648792, 173776,11256,120,165,21690,495820,2978245,5360286, 2978245,495820,21690,165] |