Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 4 |
2 | 29 |
3 | 147 |
4 | 774 |
5 | 4080 |
6 | 21489 |
7 | 113466 |
8 | 598374 |
9 | 3155426 |
10 | 16642084 |
11 | 87770692 |
12 | 462903372 |
13 | 2441353234 |
14 | 12875695490 |
15 | 67906455891 |
16 | 358138834199 |
17 | 1888825058236 |
18 | 9961667898631 |
19 | 52537860596653 |
20 | 277084804179135 |
21 | 1461345928848848 |
[4,29,147,774,4080,21489,113466,598374,3155426, 16642084,87770692,462903372,2441353234, 12875695490,67906455891,358138834199, 1888825058236,9961667898631,52537860596653, 277084804179135,1461345928848848] |