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A203910 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) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing 1
13006, 1464079, 147040347, 11575205434, 746879546466, 40994270815269, 1965119386833492, 83865348311521049, 3233306216832170143, 113913902074758737877, 3701779389021751147543, 111810206223328416940268 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A203913

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

..1..5..2....1..0..0....5..0..3....2..5..3....2..2..0....6..2..2....3..5..2

..3..3..6....5..6..6....0..5..2....3..4..6....0..4..6....2..6..6....5..3..6

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

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

..4..4..0....5..6..6....6..5..1....2..6..4....6..4..4....3..6..3....2..6..5

CROSSREFS

Sequence in context: A028385 A238142 A190947 * A138762 A139777 A031633

Adjacent sequences:  A203907 A203908 A203909 * A203911 A203912 A203913

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 07 2012

STATUS

approved

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Last modified January 17 18:00 EST 2020. Contains 330987 sequences. (Running on oeis4.)