Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 2 |
5 | 15 |
6 | 76 |
7 | 560 |
8 | 3604 |
9 | 24327 |
10 | 152952 |
11 | 925232 |
12 | 5495907 |
13 | 31966719 |
14 | 182331659 |
15 | 1021217701 |
16 | 5622236708 |
17 | 30456148470 |
18 | 162478306805 |
19 | 854327762047 |
20 | 4430787907798 |
21 | 22680031606293 |
22 | 114649453836280 |
23 | 572666511225162 |
[1,1,2,2,15,76,560,3604,24327,152952,925232, 5495907,31966719,182331659,1021217701,5622236708, 30456148470,162478306805,854327762047, 4430787907798,22680031606293,114649453836280, 572666511225162] |