Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 3 |
3 | 20 |
4 | 205 |
5 | 2604 |
6 | 39991 |
7 | 720600 |
8 | 14913081 |
9 | 348678440 |
10 | 9090909091 |
11 | 261535698060 |
12 | 8230246567621 |
13 | 281241170407092 |
14 | 10371206370520815 |
15 | 410525522232055664 |
16 | 17361641481138401521 |
17 | 781282469559318055056 |
18 | 37275544492386193492507 |
19 | 1879498672877297909667780 |
[1,0,3,20,205,2604,39991,720600,14913081, 348678440,9090909091,261535698060,8230246567621, 281241170407092,10371206370520815, 410525522232055664,17361641481138401521, 781282469559318055056,37275544492386193492507, 1879498672877297909667780] |