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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)

A266921 as a simple table

n a(n)
1 1
2 1
3 0
4 1
5 0
6 1
7 1
8 0
9 4
10 2
11 1
12 0
13 8
14 23
15 9
16 1
17 0
18 22
19 376
20 398
21 44
22 1
23 0
24 54
25 7137
26 40298
27 23432
28 265
29 1
30 0
31 142
32 147378
33 5336960
34 25499147
35 1841274
36 1854
37 1
38 0
39 368
40 3267167
41 807737754
42 39048984268
43 28504890050
44 193070360
45 14833
46 1
47 0
48 974
49 75854154

[1,1,0,1,0,1,1,0,4,2,1,0,8,23,9,1,0,22,376,398,44,
 1,0,54,7137,40298,23432,265,1,0,142,147378,
 5336960,25499147,1841274,1854,1,0,368,3267167,
 807737754,39048984268,28504890050,193070360,14833,
 1,0,974,75854154]

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 December 7 19:19 EST 2022. Contains 358669 sequences. (Running on oeis4.)