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!)

A181091 as a simple table

n a(n)
1 1
2 1
3 1
4 2
5 4
6 2
7 12
8 6
9 16
10 20
11 88
12 12
13 232
14 84
15 60
16 138
17 1596
18 144
19 1008
20 40
21 420
22 792
23 28656
24 264
25 3000
26 15080
27 5616
28 840
29 514228
30 60
31 335824
32 152214
33 19800
34 135660
35 141960
36 7632
37 13320
38 785232
39 135720
40 2160
41 1009256
42 420
43 433494436
44 94248

[1,1,1,2,4,2,12,6,16,20,88,12,232,84,60,138,1596,
 144,1008,40,420,792,28656,264,3000,15080,5616,840,
 514228,60,335824,152214,19800,135660,141960,7632,
 13320,785232,135720,2160,1009256,420,433494436,
 94248]

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 23 13:51 EDT 2024. Contains 371914 sequences. (Running on oeis4.)