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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 8 |
| 5 | 30 |
| 6 | 72 |
| 7 | 112 |
| 8 | 384 |
| 9 | 1080 |
| 10 | 1800 |
| 11 | 6336 |
| 12 | 13824 |
| 13 | 26208 |
| 14 | 94080 |
| 15 | 345600 |
| 16 | 368640 |
| 17 | 1057536 |
| 18 | 5598720 |
| 19 | 6566400 |
| 20 | 24192000 |
| 21 | 74511360 |
| 22 | 93671424 |
| 23 | 457850880 |
| 24 | 955514880 |
| 25 | 2156544000 |
| 26 | 5887365120 |
| 27 | 16460236800 |
| 28 | 40967700480 |
| 29 | 101025792000 |
[1,2,6,8,30,72,112,384,1080,1800,6336,13824,26208, 94080,345600,368640,1057536,5598720,6566400, 24192000,74511360,93671424,457850880,955514880, 2156544000,5887365120,16460236800,40967700480, 101025792000] |