Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 2 |
4 | 11 |
5 | 68 |
6 | 510 |
7 | 4712 |
8 | 51877 |
9 | 664520 |
10 | 9662968 |
11 | 156490473 |
12 | 2783955994 |
13 | 53863486240 |
14 | 1124886942314 |
15 | 25206326633070 |
16 | 603048386506505 |
17 | 15339533779133582 |
18 | 413338072569232815 |
19 | 11760801736217845686 |
20 | 352342902996056683824 |
[0,1,2,11,68,510,4712,51877,664520,9662968, 156490473,2783955994,53863486240,1124886942314, 25206326633070,603048386506505,15339533779133582, 413338072569232815,11760801736217845686, 352342902996056683824] |