Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 23 |
5 | 65 |
6 | 177 |
7 | 506 |
8 | 1551 |
9 | 5041 |
10 | 17049 |
11 | 59131 |
12 | 208469 |
13 | 743491 |
14 | 2675189 |
15 | 9695778 |
16 | 35358815 |
17 | 129646177 |
18 | 477640361 |
19 | 1767265159 |
20 | 6564122733 |
21 | 24466269715 |
22 | 91482566757 |
23 | 343059617231 |
24 | 1289904151413 |
25 | 4861946406095 |
26 | 18367353077397 |
27 | 69533550921901 |
28 | 263747951756961 |
29 | 1002242216658727 |
30 | 3814986502100477 |
[1,2,6,23,65,177,506,1551,5041,17049,59131,208469, 743491,2675189,9695778,35358815,129646177, 477640361,1767265159,6564122733,24466269715, 91482566757,343059617231,1289904151413, 4861946406095,18367353077397,69533550921901, 263747951756961,1002242216658727,3814986502100477] |