Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 28 |
4 | 264 |
5 | 3207 |
6 | 47696 |
7 | 839412 |
8 | 17061280 |
9 | 393264145 |
10 | 10135913792 |
11 | 288839201432 |
12 | 9017184333440 |
13 | 306045200463519 |
14 | 11220008681600256 |
15 | 441866073895351128 |
16 | 18603606156815235584 |
17 | 833860238440653331505 |
18 | 39643749441387211150336 |
[1,1,4,28,264,3207,47696,839412,17061280, 393264145,10135913792,288839201432,9017184333440, 306045200463519,11220008681600256, 441866073895351128,18603606156815235584, 833860238440653331505,39643749441387211150336] |