Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 4 |
6 | 23 |
7 | 143 |
8 | 1027 |
9 | 8370 |
10 | 76527 |
11 | 776207 |
12 | 8649165 |
13 | 105025575 |
14 | 1380336141 |
15 | 19521896861 |
16 | 295617295326 |
17 | 4772107767405 |
18 | 81807561726950 |
19 | 1484222905617529 |
20 | 28412267050392705 |
21 | 572304236300767347 |
[1,0,0,0,1,4,23,143,1027,8370,76527,776207, 8649165,105025575,1380336141,19521896861, 295617295326,4772107767405,81807561726950, 1484222905617529,28412267050392705, 572304236300767347] |