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!)
A156423 Number of 17 X 17 arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to n. 0
1, 32400, 221921280, 131023800192, 38710991748930, 1839487795001024, 71091010320744928, 681286019507189376 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Sequence in context: A190471 A236994 A156421 * A236656 A031639 A233680
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 July 17 09:55 EDT 2024. Contains 374372 sequences. (Running on oeis4.)