Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 3 |
6 | 15 |
7 | 91 |
8 | 649 |
9 | 5253 |
10 | 47802 |
11 | 482796 |
12 | 5359036 |
13 | 64844333 |
14 | 849460756 |
15 | 11977396665 |
16 | 180858689642 |
17 | 2911824903230 |
18 | 49792205845229 |
19 | 901238925798638 |
20 | 17213663482753993 |
21 | 345994636003355265 |
22 | 7300486819670796088 |
[1,0,0,0,1,3,15,91,649,5253,47802,482796,5359036, 64844333,849460756,11977396665,180858689642, 2911824903230,49792205845229,901238925798638, 17213663482753993,345994636003355265, 7300486819670796088] |