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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 2 |
| 6 | 1 |
| 7 | 12 |
| 8 | 42 |
| 9 | 44 |
| 10 | 9 |
| 11 | 1 |
| 12 | 32 |
| 13 | 400 |
| 14 | 2496 |
| 15 | 8256 |
| 16 | 14208 |
| 17 | 11648 |
| 18 | 3712 |
| 19 | 272 |
| 20 | 1 |
| 21 | 80 |
| 22 | 2840 |
| 23 | 59120 |
| 24 | 803580 |
| 25 | 7517264 |
| 26 | 49715240 |
| 27 | 235146480 |
| 28 | 795862790 |
| 29 | 1910146160 |
| 30 | 3190117800 |
| 31 | 3594554960 |
| 32 | 2605908220 |
| 33 | 1129177840 |
| 34 | 259084440 |
| 35 | 25108944 |
| 36 | 589185 |
| 37 | 1 |
| 38 | 192 |
| 39 | 17376 |
| 40 | 986240 |
[1,1,1,4,2,1,12,42,44,9,1,32,400,2496,8256,14208, 11648,3712,272,1,80,2840,59120,803580,7517264, 49715240,235146480,795862790,1910146160, 3190117800,3594554960,2605908220,1129177840, 259084440,25108944,589185,1,192,17376,986240] |