Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 24 |
4 | 74 |
5 | 180 |
6 | 464 |
7 | 1113 |
8 | 2646 |
9 | 6360 |
10 | 15222 |
11 | 36795 |
12 | 89584 |
13 | 219635 |
14 | 542320 |
15 | 1346881 |
16 | 3361998 |
17 | 8427172 |
18 | 21195416 |
19 | 53455740 |
20 | 135112332 |
21 | 342093443 |
22 | 867325032 |
23 | 2201286622 |
24 | 5591469852 |
25 | 14211796995 |
26 | 36139507614 |
27 | 91934054637 |
28 | 233934039872 |
29 | 595393224041 |
30 | 1515602413390 |
[1,6,24,74,180,464,1113,2646,6360,15222,36795, 89584,219635,542320,1346881,3361998,8427172, 21195416,53455740,135112332,342093443,867325032, 2201286622,5591469852,14211796995,36139507614, 91934054637,233934039872,595393224041, 1515602413390] |