Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
The OEIS is supported by the many generous donors to the OEIS Foundation.
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A156520
Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 64.
0
1, 2, 2, 7, 19, 50198, 788009, 1184902962, 55064648562
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..9.
CROSSREFS
Sequence in context: A049955 A184714 A156464 * A307426 A343577 A342644
Adjacent sequences: A156517 A156518 A156519 * A156521 A156522 A156523
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
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 21 09:02 EDT 2024. Contains 376980 sequences.
License Agreements, Terms of Use, Privacy Policy