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A203666 Number of (n+1)X3 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
10530, 317138, 6780455, 108864887, 1447373824, 16256618529, 160492711072, 1415401335585, 11371075234194, 84200211332970, 581264413055940, 3772153171756957, 23184385843754255, 135761903090909843 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A203672
LINKS
EXAMPLE
Some solutions for n=4
..4..0..0....3..3..4....3..3..4....3..0..2....6..6..6....5..0..1....5..3..5
..0..6..6....6..6..6....4..5..4....2..5..6....6..6..6....0..5..5....2..6..4
..2..6..6....6..6..6....4..5..6....4..6..5....6..6..6....1..4..6....5..4..6
..3..6..6....6..6..6....4..5..6....5..5..6....6..6..6....3..4..6....4..5..6
..3..6..6....6..6..6....3..6..5....4..6..5....6..6..6....5..4..6....3..6..5
CROSSREFS
Sequence in context: A216489 A120500 A157487 * A346892 A119866 A292703
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 04 2012
STATUS
approved

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Last modified February 29 04:26 EST 2024. Contains 370401 sequences. (Running on oeis4.)