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A233300 Number of (n+1)X(4+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..4+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing 0
34, 232, 1986, 21957, 239330, 2694620, 30257296, 338790472, 3761876941, 41492573432 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A233301

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Sequence in context: A020869 A355884 A055716 * A281052 A020872 A302474

Adjacent sequences:  A233297 A233298 A233299 * A233301 A233302 A233303

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 07 2013

STATUS

approved

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Last modified September 28 20:34 EDT 2022. Contains 357081 sequences. (Running on oeis4.)