Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
2 | 1 |
3 | 6 |
4 | 40 |
5 | 200 |
6 | 1056 |
7 | 4928 |
8 | 23808 |
9 | 107136 |
10 | 494080 |
11 | 2173952 |
12 | 9744384 |
13 | 42225664 |
14 | 185679872 |
15 | 795770880 |
16 | 3451518976 |
17 | 14668955648 |
18 | 62970789888 |
19 | 265876668416 |
20 | 1132226150400 |
21 | 4755349831680 |
22 | 20120910954496 |
23 | 84141991264256 |
24 | 354160151101440 |
25 | 1475667296256000 |
26 | 6184144161734656 |
[1,6,40,200,1056,4928,23808,107136,494080,2173952, 9744384,42225664,185679872,795770880,3451518976, 14668955648,62970789888,265876668416, 1132226150400,4755349831680,20120910954496, 84141991264256,354160151101440,1475667296256000, 6184144161734656] |