login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A156481 Number of n X n arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to 24. 0
2, 0, 31, 210, 36876, 568284, 46154300, 2932212900, 1044426597950 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,1

LINKS

Table of n, a(n) for n=4..12.

CROSSREFS

Sequence in context: A104466 A086487 A071147 * A176726 A156452 A156473

Adjacent sequences:  A156478 A156479 A156480 * A156482 A156483 A156484

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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 20 18:19 EDT 2019. Contains 328269 sequences. (Running on oeis4.)