Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 22 |
4 | 142 |
5 | 1006 |
6 | 7570 |
7 | 59410 |
8 | 480910 |
9 | 3986230 |
10 | 33666154 |
11 | 288675322 |
12 | 2506487158 |
13 | 21993277294 |
14 | 194717676514 |
15 | 1737297725602 |
16 | 15604975886110 |
17 | 140999418473830 |
18 | 1280687414193370 |
19 | 11686769594020810 |
20 | 107093513405758342 |
21 | 985080052054562206 |
22 | 9092152494448328914 |
[0,1,4,22,142,1006,7570,59410,480910,3986230, 33666154,288675322,2506487158,21993277294, 194717676514,1737297725602,15604975886110, 140999418473830,1280687414193370, 11686769594020810,107093513405758342, 985080052054562206,9092152494448328914] |