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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 6 |
| 6 | 1 |
| 7 | 1 |
| 8 | 46 |
| 9 | 1926 |
| 10 | 1 |
| 11 | 12 |
| 12 | 648 |
| 13 | 92544 |
| 14 | 15767640 |
| 15 | 1 |
| 16 | 30 |
| 17 | 6312 |
| 18 | 3943710 |
| 19 | 2933201376 |
| 20 | 2061379857600 |
| 21 | 1 |
| 22 | 90 |
| 23 | 92400 |
| 24 | 192994200 |
| 25 | 577186150464 |
| 26 | 1605824110657800 |
| 27 | 5363188066566330000 |
| 28 | 1 |
| 29 | 318 |
| 30 | 1051140 |
| 31 | 10266445476 |
| 32 | 118129589107200 |
| 33 | 1340797019145183600 |
[1,1,1,1,1,6,1,1,46,1926,1,12,648,92544,15767640, 1,30,6312,3943710,2933201376,2061379857600,1,90, 92400,192994200,577186150464,1605824110657800, 5363188066566330000,1,318,1051140,10266445476, 118129589107200,1340797019145183600] |