Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 23 |
4 | 180 |
5 | 1777 |
6 | 21144 |
7 | 294239 |
8 | 4686680 |
9 | 84066001 |
10 | 1676633340 |
11 | 36801867479 |
12 | 881568186156 |
13 | 22883970972577 |
14 | 639869619046000 |
15 | 19173204600407423 |
16 | 612902677593991536 |
17 | 20819517833595304801 |
18 | 748889739331836981300 |
[0,1,4,23,180,1777,21144,294239,4686680,84066001, 1676633340,36801867479,881568186156, 22883970972577,639869619046000,19173204600407423, 612902677593991536,20819517833595304801, 748889739331836981300] |