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A232876 Number of (n+1)X(6+1) 0..1 arrays x(i,j) with row sums sum{j^2*x(i,j), j=1..6+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing 0
81, 1235, 26553, 706994, 16272765, 330663907, 5853344894, 94722968640 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A232877

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=3

..0..0..0..0..0..0..1....1..0..1..0..0..0..0....0..1..1..0..0..1..0

..0..1..1..0..0..0..1....0..1..1..0..0..0..1....1..0..0..0..0..0..1

..0..0..0..1..0..1..1....0..0..0..1..1..1..1....0..0..0..1..1..1..1

..0..0..0..0..1..1..1....0..1..1..1..1..1..1....0..1..1..1..1..1..1

CROSSREFS

Sequence in context: A230677 A231994 A236790 * A224355 A016768 A224014

Adjacent sequences:  A232873 A232874 A232875 * A232877 A232878 A232879

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 01 2013

STATUS

approved

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Last modified December 9 03:42 EST 2021. Contains 349625 sequences. (Running on oeis4.)