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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 8 |
| 5 | 1 |
| 6 | 1 |
| 7 | 36 |
| 8 | 36 |
| 9 | 1 |
| 10 | 1 |
| 11 | 120 |
| 12 | 540 |
| 13 | 120 |
| 14 | 1 |
| 15 | 1 |
| 16 | 330 |
| 17 | 4950 |
| 18 | 4950 |
| 19 | 330 |
| 20 | 1 |
| 21 | 1 |
| 22 | 792 |
| 23 | 32670 |
| 24 | 108900 |
| 25 | 32670 |
| 26 | 792 |
| 27 | 1 |
| 28 | 1 |
| 29 | 1716 |
| 30 | 169884 |
| 31 | 1557270 |
| 32 | 1557270 |
| 33 | 169884 |
| 34 | 1716 |
| 35 | 1 |
| 36 | 1 |
| 37 | 3432 |
| 38 | 736164 |
| 39 | 16195608 |
| 40 | 44537922 |
| 41 | 16195608 |
| 42 | 736164 |
| 43 | 3432 |
| 44 | 1 |
[1,1,1,1,8,1,1,36,36,1,1,120,540,120,1,1,330,4950, 4950,330,1,1,792,32670,108900,32670,792,1,1,1716, 169884,1557270,1557270,169884,1716,1,1,3432, 736164,16195608,44537922,16195608,736164,3432,1] |