Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 40 |
3 | 460 |
4 | 5940 |
5 | 82060 |
6 | 1188140 |
7 | 17792060 |
8 | 273299640 |
9 | 4282438360 |
10 | 68184114040 |
11 | 1099949668960 |
12 | 17940069922740 |
13 | 295334808497460 |
14 | 4900888478007740 |
15 | 81893191113037760 |
16 | 1376770060020516140 |
17 | 23270650287508521860 |
18 | 395214289798485048340 |
19 | 6740892510015481994360 |
20 | 115419341703097589417340 |
[1,4,40,460,5940,82060,1188140,17792060,273299640, 4282438360,68184114040,1099949668960, 17940069922740,295334808497460,4900888478007740, 81893191113037760,1376770060020516140, 23270650287508521860,395214289798485048340, 6740892510015481994360,115419341703097589417340] |