%I #4 Mar 31 2012 12:36:58
%S 6287755,40229386532,909510089895106,18604524788467098072,
%T 304473777397661322628561
%N Number of (n+1)X7 0..4 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing
%C Column 6 of A203896
%e Some solutions for n=4
%e ..4..4..4..4..4..4..4....3..1..0..2..4..1..1....1..4..1..3..2..1..3
%e ..4..4..4..4..4..4..4....1..3..4..2..1..4..4....4..1..4..2..3..4..4
%e ..4..4..4..4..4..4..4....2..3..2..4..0..2..3....1..4..2..4..3..4..1
%e ..4..4..4..4..4..4..4....2..3..4..3..2..2..3....1..4..3..3..4..2..4
%e ..4..4..4..4..4..4..4....2..3..4..4..2..0..3....4..2..1..3..3..3..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 07 2012
|