Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
2 | 1 |
3 | 4 |
4 | 13 |
5 | 28 |
6 | 111 |
7 | 977 |
8 | 7280 |
9 | 55365 |
10 | 714096 |
11 | 13471597 |
12 | 269297226 |
13 | 6772718447 |
14 | 245090678582 |
15 | 11547321954885 |
16 | 661077498433706 |
17 | 49292298477002834 |
18 | 4904773608293842400 |
[1,4,13,28,111,977,7280,55365,714096,13471597, 269297226,6772718447,245090678582,11547321954885, 661077498433706,49292298477002834, 4904773608293842400] |