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A203733
Number of (n+1)X(n+1) 0..3 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) nondecreasing in column and row directions, respectively
0
90, 3912, 178836, 7927078, 325435792, 12852015708, 513715285322, 21463727483530, 946913403808620, 43905367195100872, 2117084835230553844, 105066513574419532846
OFFSET
1,1
COMMENTS
Diagonal of A203741
EXAMPLE
Some solutions for n=4
..3..0..0..1..1....2..1..0..1..2....0..1..0..3..1....0..3..1..1..3
..0..3..3..3..3....1..2..3..3..3....2..1..2..1..3....2..1..3..3..3
..1..3..3..3..3....2..2..3..3..3....0..3..2..3..2....0..3..3..3..3
..2..3..3..3..3....3..3..3..3..3....1..2..3..2..3....1..3..3..3..3
..2..3..3..3..3....3..3..3..3..3....3..3..2..3..2....3..3..3..3..3
CROSSREFS
Sequence in context: A013392 A013394 A013395 * A200208 A017806 A035740
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 05 2012
STATUS
approved