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!)
A156478 Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 22. 0
2, 44, 40, 7838, 31206, 5100574, 62202832, 23258023832, 999916709280, 912189500014368 (list; graph; refs; listen; history; text; internal format)
OFFSET
3,1
LINKS
CROSSREFS
Sequence in context: A362762 A177490 A203498 * A156508 A239865 A007367
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved

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 March 28 17:42 EDT 2024. Contains 371254 sequences. (Running on oeis4.)