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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 6 |
| 5 | 1 |
| 6 | 1 |
| 7 | 28 |
| 8 | 28 |
| 9 | 1 |
| 10 | 1 |
| 11 | 120 |
| 12 | 560 |
| 13 | 120 |
| 14 | 1 |
| 15 | 1 |
| 16 | 496 |
| 17 | 9920 |
| 18 | 9920 |
| 19 | 496 |
| 20 | 1 |
| 21 | 1 |
| 22 | 2016 |
| 23 | 166656 |
| 24 | 714240 |
| 25 | 166656 |
| 26 | 2016 |
| 27 | 1 |
| 28 | 1 |
| 29 | 8128 |
| 30 | 2731008 |
| 31 | 48377856 |
| 32 | 48377856 |
| 33 | 2731008 |
| 34 | 8128 |
| 35 | 1 |
| 36 | 1 |
| 37 | 32640 |
| 38 | 44216320 |
| 39 | 3183575040 |
| 40 | 13158776832 |
| 41 | 3183575040 |
| 42 | 44216320 |
| 43 | 32640 |
| 44 | 1 |
[1,1,1,1,6,1,1,28,28,1,1,120,560,120,1,1,496,9920, 9920,496,1,1,2016,166656,714240,166656,2016,1,1, 8128,2731008,48377856,48377856,2731008,8128,1,1, 32640,44216320,3183575040,13158776832,3183575040, 44216320,32640,1] |