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Number of 5 X 5 0..n arrays with row and column sums equal.
1

%I #8 May 11 2020 14:59:33

%S 1,4322,2577513,290838284,11991502235,255657603186,3430832678207,

%T 32701809796548,239657412990669,1426274971770170,7169135482380621,

%U 31335724079805792,121778484808846083,428134536074377254,1380524064964529355,4128449284755670956

%N Number of 5 X 5 0..n arrays with row and column sums equal.

%e Some solutions for n=1

%e ..1..0..1..0..1....1..0..0..1..1....1..0..0..1..1....1..0..0..1..1

%e ..0..1..1..0..1....1..1..1..0..0....0..1..1..0..1....1..1..1..0..0

%e ..1..1..0..1..0....1..1..1..0..0....0..1..1..1..0....0..1..0..1..1

%e ..1..0..0..1..1....0..1..0..1..1....1..0..1..0..1....1..1..1..0..0

%e ..0..1..1..1..0....0..0..1..1..1....1..1..0..1..0....0..0..1..1..1

%Y Row 5 of A202784.

%K nonn

%O 0,2

%A _R. H. Hardin_, Dec 24 2011

%E a(0)=1 prepended and a(9)-a(15) from _Andrew Howroyd_, May 11 2020