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 A203911 Number of (n+1)X4 0..6 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 1
 203994, 147040347, 111118765078, 63988637491851, 29334499587197078, 11182918411649538015, 3656539548388832446371, 1048301248458803859992252, 267875645578258677848266646, 61792693706402815887236884165 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A203913 LINKS R. H. Hardin, Table of n, a(n) for n = 1..144 EXAMPLE Some solutions for n=4 ..4..3..3..1....6..3..4..5....1..1..2..2....5..0..6..4....4..1..1..5 ..3..4..4..6....3..6..5..4....3..3..6..6....0..5..2..4....0..5..5..6 ..6..5..5..4....6..4..5..6....2..4..6..6....6..1..0..3....0..5..5..6 ..5..6..6..4....4..6..6..5....6..1..4..4....1..6..3..5....1..4..6..5 ..5..6..6..4....5..6..4..5....1..6..3..3....4..6..2..0....4..2..1..1 CROSSREFS Sequence in context: A176167 A248203 A235854 * A237014 A218448 A234836 Adjacent sequences:  A203908 A203909 A203910 * A203912 A203913 A203914 KEYWORD nonn AUTHOR R. H. Hardin Jan 07 2012 STATUS approved

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Last modified January 20 19:53 EST 2020. Contains 331096 sequences. (Running on oeis4.)