Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 26 |
4 | 240 |
5 | 2884 |
6 | 42660 |
7 | 748544 |
8 | 15185856 |
9 | 349574544 |
10 | 9000902500 |
11 | 256293989984 |
12 | 7996078704240 |
13 | 271246034903232 |
14 | 9939835626507332 |
15 | 391303051339622400 |
16 | 16469438021801262848 |
17 | 737992773619777599744 |
18 | 35077254665501330210628 |
19 | 1762671472887447792620032 |
[0,1,4,26,240,2884,42660,748544,15185856, 349574544,9000902500,256293989984,7996078704240, 271246034903232,9939835626507332, 391303051339622400,16469438021801262848, 737992773619777599744,35077254665501330210628, 1762671472887447792620032] |