The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 10 |
| 4 | 865 |
| 5 | 155082 |
| 6 | 52802560 |
| 7 | 40048988817 |
| 8 | 71202718146816 |
| 9 | 315615332953930528 |
| 10 | 3574469013941010577249 |
| 11 | 104798469697184132865547168 |
| 12 | 7984603919946049180938300030976 |
| 13 | 1584983603576817306123611193840098529 |
| 14 | 820874582413458038007335015822715588591616 |
[0,0,10,865,155082,52802560,40048988817, 71202718146816,315615332953930528, 3574469013941010577249, 104798469697184132865547168, 7984603919946049180938300030976, 1584983603576817306123611193840098529, 820874582413458038007335015822715588591616] |