Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | 15 |
5 | 69 |
6 | 401 |
7 | 2715 |
8 | 21115 |
9 | 185345 |
10 | 1812263 |
11 | 19532171 |
12 | 230045569 |
13 | 2939471158 |
14 | 40499380397 |
15 | 598490843643 |
16 | 9442855533027 |
17 | 158430131720783 |
18 | 2816535675036147 |
19 | 52888281009012092 |
20 | 1046012668844905826 |
[1,1,1,4,15,69,401,2715,21115,185345,1812263, 19532171,230045569,2939471158,40499380397, 598490843643,9442855533027,158430131720783, 2816535675036147,52888281009012092, 1046012668844905826] |