Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 2 |
4 | 4 |
5 | 11 |
6 | 26 |
7 | 76 |
8 | 222 |
9 | 721 |
10 | 2361 |
11 | 7737 |
12 | 25780 |
13 | 85449 |
14 | 284610 |
15 | 947298 |
16 | 3154457 |
17 | 10507280 |
18 | 34994885 |
19 | 116569493 |
20 | 388281532 |
21 | 1293363746 |
22 | 4308190293 |
23 | 14350558511 |
24 | 47801810756 |
25 | 159227933912 |
26 | 530389181794 |
27 | 1766729082040 |
28 | 5884984209038 |
[1,2,2,4,11,26,76,222,721,2361,7737,25780,85449, 284610,947298,3154457,10507280,34994885,116569493, 388281532,1293363746,4308190293,14350558511, 47801810756,159227933912,530389181794, 1766729082040,5884984209038] |