Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 0 |
2 | 4 |
3 | 32 |
4 | 228 |
5 | 1600 |
6 | 11204 |
7 | 78432 |
8 | 549028 |
9 | 3843200 |
10 | 26902404 |
11 | 188316832 |
12 | 1318217828 |
13 | 9227524800 |
14 | 64592673604 |
15 | 452148715232 |
16 | 3165041006628 |
17 | 22155287046400 |
18 | 155087009324804 |
19 | 1085609065273632 |
20 | 7599263456915428 |
21 | 53194844198408000 |
22 | 372363909388856004 |
23 | 2606547365721992032 |
[0,4,32,228,1600,11204,78432,549028,3843200, 26902404,188316832,1318217828,9227524800, 64592673604,452148715232,3165041006628, 22155287046400,155087009324804,1085609065273632, 7599263456915428,53194844198408000, 372363909388856004,2606547365721992032] |