login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)

A181621 as a simple table

n a(n)
1 2
2 1
3 1
4 6
5 2
6 22
7 54
8 3
9 68
10 403
11 914
12 6
13 192
14 2228
15 10886
16 21874
17 9
18 512
19 9721
20 85974
21 360071
22 676326
23 18
24 1312
25 37736
26 526760
27 3809428
28 14229762
29 25392410 

[2,1,1,6,2,22,54,3,68,403,914,6,192,2228,10886,
 21874,9,512,9721,85974,360071,676326,18,1312,
 37736,526760,3809428,14229762,25392410]

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 12:14 EDT 2024. Contains 371792 sequences. (Running on oeis4.)