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A203667 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) nondecreasing in column and row directions, respectively 1
111648, 6780455, 258487684, 7178236454, 150678768765, 2567705516301, 36453931556452, 446170354019486, 4795059967006464, 46124639612757140, 402302169592929650, 3220308535488715027, 23878162751692839974 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A203672

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..194

EXAMPLE

Some solutions for n=4

..3..6..3..6....2..5..1..1....5..5..4..4....3..4..5..5....5..6..5..5

..6..3..6..3....5..2..6..6....5..5..6..6....1..6..5..5....6..5..6..6

..3..6..3..6....1..6..6..6....4..6..6..6....3..5..6..6....5..6..6..6

..6..3..6..3....4..6..6..6....4..6..6..6....3..5..6..6....5..6..6..6

..3..6..3..6....6..6..6..6....6..6..6..6....2..6..6..6....5..6..6..6

CROSSREFS

Sequence in context: A206509 A033446 A033447 * A210059 A236892 A237154

Adjacent sequences:  A203664 A203665 A203666 * A203668 A203669 A203670

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 04 2012

STATUS

approved

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Last modified August 5 07:21 EDT 2020. Contains 336209 sequences. (Running on oeis4.)