Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 20 |
2 | 990 |
3 | 56576 |
4 | 3432198 |
5 | 215147520 |
6 | 13768454700 |
7 | 893768826880 |
8 | 58626071754822 |
9 | 3876225891958784 |
10 | 257898242928604740 |
11 | 17245961314149335040 |
12 | 1158088115444301759900 |
13 | 78040346182201091555328 |
[1,20,990,56576,3432198,215147520,13768454700, 893768826880,58626071754822,3876225891958784, 257898242928604740,17245961314149335040, 1158088115444301759900,78040346182201091555328] |