Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 22 |
5 | 86 |
6 | 330 |
7 | 1206 |
8 | 4174 |
9 | 13726 |
10 | 43134 |
11 | 130302 |
12 | 380414 |
13 | 1078270 |
14 | 2978814 |
15 | 8046590 |
16 | 21311486 |
17 | 55468030 |
18 | 142147582 |
19 | 359268350 |
20 | 896794622 |
21 | 2213543934 |
22 | 5408292862 |
23 | 13091995646 |
24 | 31424774142 |
25 | 74845257726 |
26 | 176991240190 |
27 | 415789744126 |
28 | 970830381054 |
[1,2,6,22,86,330,1206,4174,13726,43134,130302, 380414,1078270,2978814,8046590,21311486,55468030, 142147582,359268350,896794622,2213543934, 5408292862,13091995646,31424774142,74845257726, 176991240190,415789744126,970830381054] |