Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 5 |
2 | 25 |
3 | 117 |
4 | 573 |
5 | 2833 |
6 | 13785 |
7 | 68311 |
8 | 339839 |
9 | 1677913 |
10 | 8250991 |
11 | 41042033 |
12 | 202864491 |
13 | 1010570485 |
14 | 5010240575 |
15 | 24786030031 |
16 | 123527459073 |
17 | 613216664859 |
18 | 3059004849315 |
19 | 15214286790073 |
20 | 75565229450871 |
21 | 374920922490613 |
[5,25,117,573,2833,13785,68311,339839,1677913, 8250991,41042033,202864491,1010570485,5010240575, 24786030031,123527459073,613216664859, 3059004849315,15214286790073,75565229450871, 374920922490613] |