Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 15 |
4 | 48 |
5 | 160 |
6 | 549 |
7 | 1924 |
8 | 6851 |
9 | 24700 |
10 | 89945 |
11 | 330239 |
12 | 1220884 |
13 | 4540128 |
14 | 16968958 |
15 | 63701573 |
16 | 240059998 |
17 | 907760348 |
18 | 3443048256 |
19 | 13094812968 |
20 | 49925646786 |
21 | 190772846082 |
22 | 730451716847 |
23 | 2802033270234 |
24 | 10767028435468 |
25 | 41438212118088 |
26 | 159711845145544 |
27 | 616393788920923 |
28 | 2381898673172602 |
[1,2,5,15,48,160,549,1924,6851,24700,89945,330239, 1220884,4540128,16968958,63701573,240059998, 907760348,3443048256,13094812968,49925646786, 190772846082,730451716847,2802033270234, 10767028435468,41438212118088,159711845145544, 616393788920923,2381898673172602] |