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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 6 |
| 6 | 2 |
| 7 | 36 |
| 8 | 36 |
| 9 | 360 |
| 10 | 288 |
| 11 | 11016 |
| 12 | 3888 |
| 13 | 238464 |
| 14 | 200448 |
| 15 | 3176496 |
| 16 | 4257792 |
| 17 | 402573312 |
| 18 | 139511808 |
| 19 | 18240768000 |
| 20 | 11813990400 |
| 21 | 440506183680 |
| 22 | 532754620416 |
| 23 | 96429560832000 |
| 24 | 32681097216000 |
| 25 | 5244692024217600 |
| 26 | 6107246661427200 |
| 27 | 490508471914905600 |
| 28 | 468867166554931200 |
| 29 | 134183696369843404800 |
[1,1,1,1,6,2,36,36,360,288,11016,3888,238464, 200448,3176496,4257792,402573312,139511808, 18240768000,11813990400,440506183680,532754620416, 96429560832000,32681097216000,5244692024217600, 6107246661427200,490508471914905600, 468867166554931200,134183696369843404800] |