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A233299 Number of (n+1)X(3+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..3+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing 0
22, 105, 567, 3556, 21856, 135636, 836259, 5134856, 31326263, 190404404, 1153108628, 6966626079, 42004555617, 252889763684 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A233301

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Sequence in context: A231225 A124950 A126409 * A174074 A261534 A041938

Adjacent sequences:  A233296 A233297 A233298 * A233300 A233301 A233302

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 07 2013

STATUS

approved

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Last modified August 12 04:12 EDT 2020. Contains 336436 sequences. (Running on oeis4.)