Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 0 |
2 | 2 |
3 | 1 |
4 | 14 |
5 | 26 |
6 | 132 |
7 | 364 |
8 | 1416 |
9 | 4488 |
10 | 16016 |
11 | 53296 |
12 | 184736 |
13 | 625184 |
14 | 2145600 |
15 | 7303360 |
16 | 24979584 |
17 | 85196928 |
18 | 291057920 |
19 | 993379072 |
20 | 3392317952 |
21 | 11580678656 |
22 | 39541748736 |
23 | 134998297600 |
24 | 460924372992 |
25 | 1573671536640 |
26 | 5372896120832 |
[0,2,1,14,26,132,364,1416,4488,16016,53296,184736, 625184,2145600,7303360,24979584,85196928, 291057920,993379072,3392317952,11580678656, 39541748736,134998297600,460924372992, 1573671536640,5372896120832] |