Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 3 |
4 | 11 |
5 | 35 |
6 | 108 |
7 | 380 |
8 | 1348 |
9 | 5014 |
10 | 18223 |
11 | 67634 |
12 | 252849 |
13 | 950346 |
14 | 3602437 |
15 | 13697333 |
16 | 52293534 |
17 | 200399576 |
18 | 770410271 |
19 | 2970369338 |
20 | 11482572252 |
21 | 44492417777 |
22 | 172766286339 |
23 | 672186167762 |
24 | 2619985274260 |
25 | 10228841840226 |
26 | 39996338183554 |
27 | 156612016049122 |
[0,1,3,11,35,108,380,1348,5014,18223,67634,252849, 950346,3602437,13697333,52293534,200399576, 770410271,2970369338,11482572252,44492417777, 172766286339,672186167762,2619985274260, 10228841840226,39996338183554,156612016049122] |