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 A204331 Number of (n+1)X(n+1) 0..7 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
 1212, 947240, 1641649698, 4891607353910, 20044731040262804 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A204339 LINKS EXAMPLE Some solutions for n=4 ..0..0..4..0..2....2..7..2..7..5....5..4..6..3..5....4..3..1..1..6 ..1..3..1..5..7....7..2..7..5..7....3..6..4..7..5....2..5..7..7..7 ..6..4..6..5..7....2..7..5..7..6....5..4..6..5..7....0..7..7..7..7 ..3..7..5..6..6....4..5..7..6..7....2..7..5..6..6....7..7..7..7..7 ..5..5..7..6..6....2..7..6..7..6....7..5..7..6..6....7..7..7..7..7 CROSSREFS Sequence in context: A203657 A250159 A184464 * A105311 A252125 A251815 Adjacent sequences:  A204328 A204329 A204330 * A204332 A204333 A204334 KEYWORD nonn AUTHOR R. H. Hardin Jan 14 2012 STATUS approved

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Last modified November 28 10:05 EST 2021. Contains 349401 sequences. (Running on oeis4.)