Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 3 |
4 | 20 |
5 | 52 |
6 | 357 |
7 | 935 |
8 | 6408 |
9 | 16776 |
10 | 114985 |
11 | 301035 |
12 | 2063324 |
13 | 5401852 |
14 | 37024845 |
15 | 96932303 |
16 | 664383888 |
17 | 1739379600 |
18 | 11921885137 |
19 | 31211900499 |
20 | 213929548580 |
21 | 560074829380 |
22 | 3838809989301 |
23 | 10050135028343 |
24 | 68884650258840 |
25 | 180342355680792 |
26 | 1236084894669817 |
[0,1,3,20,52,357,935,6408,16776,114985,301035, 2063324,5401852,37024845,96932303,664383888, 1739379600,11921885137,31211900499,213929548580, 560074829380,3838809989301,10050135028343, 68884650258840,180342355680792,1236084894669817] |