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!)
A156407 Number of 11 X 11 arrays of squares of integers, symmetric about the diagonal and under 90-degree rotation, with all rows summing to n. 0

%I #5 Oct 27 2019 22:11:11

%S 1,0,0,0,112,0,0,0,80,0,0,291,1380,0,0,0,468,0,0,868,1680,0,0,0,3500,

%T 0,0,4560,1180,0,0,0,5030,0,0,5603,13884,0,0,0,16464,0,0,10520,28039,

%U 0,0,0,18060,0,0,30480,37500,0,0,0,37704,0,0,38588,16080,0,0,0,30068,0,0,91760

%N Number of 11 X 11 arrays of squares of integers, symmetric about the diagonal and under 90-degree rotation, with all rows summing to n.

%K nonn

%O 0,5

%A _R. H. Hardin_, Feb 09 2009

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 April 19 08:08 EDT 2024. Contains 371782 sequences. (Running on oeis4.)