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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 1 |
| 6 | 1 |
| 7 | 36 |
| 8 | 36 |
| 9 | 1 |
| 10 | 1 |
| 11 | 560 |
| 12 | 1820 |
| 13 | 560 |
| 14 | 1 |
| 15 | 1 |
| 16 | 12650 |
| 17 | 177100 |
| 18 | 177100 |
| 19 | 12650 |
| 20 | 1 |
| 21 | 1 |
| 22 | 376992 |
| 23 | 30260340 |
| 24 | 94143280 |
| 25 | 30260340 |
| 26 | 376992 |
| 27 | 1 |
| 28 | 1 |
| 29 | 13983816 |
| 30 | 8217822536 |
| 31 | 92263734836 |
| 32 | 92263734836 |
| 33 | 8217822536 |
| 34 | 13983816 |
| 35 | 1 |
| 36 | 1 |
| 37 | 621216192 |
| 38 | 3284214703056 |
| 39 | 159518999862720 |
| 40 | 488526937079580 |
[1,1,1,1,4,1,1,36,36,1,1,560,1820,560,1,1,12650, 177100,177100,12650,1,1,376992,30260340,94143280, 30260340,376992,1,1,13983816,8217822536, 92263734836,92263734836,8217822536,13983816,1,1, 621216192,3284214703056,159518999862720, 488526937079580] |