n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 10 |
3 | 252 |
4 | 12176 |
5 | 966240 |
6 | 114341760 |
7 | 18897709824 |
8 | 4160840140800 |
9 | 1177736213606400 |
10 | 416807049369600000 |
11 | 180368555623280640000 |
12 | 93711488655948742656000 |
13 | 57572391079539343687680000 |
[0,1,10,252,12176,966240,114341760,18897709824, 4160840140800,1177736213606400,416807049369600000, 180368555623280640000,93711488655948742656000, 57572391079539343687680000] |