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 | 1 |
4 | 1 |
5 | 3 |
6 | 7 |
7 | 27 |
8 | 120 |
9 | 590 |
10 | 3172 |
11 | 18291 |
12 | 112597 |
13 | 731646 |
14 | 5002261 |
15 | 35805035 |
16 | 267427870 |
17 | 2077890719 |
18 | 16753007782 |
19 | 139843832074 |
20 | 1206213748404 |
21 | 10731971520412 |
22 | 98340872850392 |
23 | 926788397662602 |
24 | 8971598464914888 |
25 | 89105060389927172 |
26 | 907030917078092542 |
[1,0,0,1,1,3,7,27,120,590,3172,18291,112597, 731646,5002261,35805035,267427870,2077890719, 16753007782,139843832074,1206213748404, 10731971520412,98340872850392,926788397662602, 8971598464914888,89105060389927172, 907030917078092542] |