[go: up one dir, main page]
login
The OEIS is supported by the many generous donors to the OEIS Foundation.
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A141048
Number of n X n binary matrices, symmetric under 180 degree rotation, with rows, considered as binary numbers, in nondecreasing order.
0
1, 2, 3, 6, 19, 104, 714, 10288, 181480, 8058336, 431947824, 66774883640, 11792570643048, 6617203485824240, 3981347426807559400, 8141786556740296629920, 17017992772547895875527944
(list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
Table of n, a(n) for n=0..16.
CROSSREFS
Sequence in context: A182250 A121959 A075633 * A326030 A124066 A319204
Adjacent sequences: A141045 A141046 A141047 * A141049 A141050 A141051
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 31 2008
STATUS
approved

Lookup Welcome Wiki Register Music Plot 2 Demos Index WebCam Contribute Format Style Sheet Transforms Superseeker Recents
The OEIS Community
Maintained by The OEIS Foundation Inc.
Last modified October 4 21:32 EDT 2024. Contains 376525 sequences.
License Agreements, Terms of Use, Privacy Policy