Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 6 |
4 | 40 |
5 | 198 |
6 | 910 |
7 | 3848 |
8 | 15492 |
9 | 59920 |
10 | 224917 |
11 | 824074 |
12 | 2960828 |
13 | 10466610 |
14 | 36498195 |
15 | 125801144 |
16 | 429284612 |
17 | 1452174984 |
18 | 4874940295 |
19 | 16254780970 |
20 | 53873727516 |
21 | 177594715034 |
22 | 582603630260 |
23 | 1902860189328 |
24 | 6190199896600 |
25 | 20064013907288 |
26 | 64815504118695 |
27 | 208739559416878 |
28 | 670345766842528 |
[0,1,6,40,198,910,3848,15492,59920,224917,824074, 2960828,10466610,36498195,125801144,429284612, 1452174984,4874940295,16254780970,53873727516, 177594715034,582603630260,1902860189328, 6190199896600,20064013907288,64815504118695, 208739559416878,670345766842528] |