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 | 28 |
5 | 150 |
6 | 848 |
7 | 4988 |
8 | 30320 |
9 | 189030 |
10 | 1201792 |
11 | 7761296 |
12 | 50774280 |
13 | 335776204 |
14 | 2241022944 |
15 | 15075584864 |
16 | 102113820256 |
17 | 695842808070 |
18 | 4767068036992 |
19 | 32813466593552 |
20 | 226829615262744 |
21 | 1574027068685944 |
22 | 10960566883613504 |
23 | 76564394477117688 |
24 | 536383955787886208 |
25 | 3767701071640753708 |
26 | 26530029714589074464 |
27 | 187231524430927518240 |
[1,2,6,28,150,848,4988,30320,189030,1201792, 7761296,50774280,335776204,2241022944,15075584864, 102113820256,695842808070,4767068036992, 32813466593552,226829615262744,1574027068685944, 10960566883613504,76564394477117688, 536383955787886208,3767701071640753708, 26530029714589074464,187231524430927518240] |