Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 30 |
5 | 96 |
6 | 309 |
7 | 996 |
8 | 3207 |
9 | 10329 |
10 | 33267 |
11 | 107142 |
12 | 345072 |
13 | 1111371 |
14 | 3579384 |
15 | 11528097 |
16 | 37128459 |
17 | 119579361 |
18 | 385128390 |
19 | 1240380240 |
20 | 3994883733 |
[0,1,3,9,30,96,309,996,3207,10329,33267,107142, 345072,1111371,3579384,11528097,37128459, 119579361,385128390,1240380240,3994883733] |