Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 0 |
2 | 20 |
3 | 429 |
4 | 5920 |
5 | 63954 |
6 | 510927 |
7 | 3362288 |
8 | 17975676 |
9 | 83628636 |
10 | 335900991 |
11 | 1222011613 |
12 | 3989760008 |
13 | 12105111844 |
14 | 33802351881 |
15 | 89361617169 |
16 | 221117356432 |
17 | 524533042878 |
18 | 1178959072101 |
19 | 2564070846089 |
20 | 5330170938874 |
21 | 10795501502457 |
[0,20,429,5920,63954,510927,3362288,17975676, 83628636,335900991,1222011613,3989760008, 12105111844,33802351881,89361617169,221117356432, 524533042878,1178959072101,2564070846089, 5330170938874,10795501502457] |