Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 20 |
5 | 60 |
6 | 210 |
7 | 756 |
8 | 2952 |
9 | 11565 |
10 | 46550 |
11 | 187803 |
12 | 763200 |
13 | 3101683 |
14 | 12627594 |
15 | 51398640 |
16 | 209268080 |
17 | 851834453 |
18 | 3467196936 |
19 | 14109860408 |
20 | 57413439000 |
21 | 233584274238 |
22 | 950220869136 |
23 | 3865081177744 |
24 | 15719992809672 |
25 | 63930676119100 |
[1,2,6,20,60,210,756,2952,11565,46550,187803, 763200,3101683,12627594,51398640,209268080, 851834453,3467196936,14109860408,57413439000, 233584274238,950220869136,3865081177744, 15719992809672,63930676119100] |