A267992 - OEIS

A267992

Number of 3Xn arrays containing n copies of 0..3-1 with row sums and column sums nondecreasing.

1, 21, 145, 1122, 7886, 58446, 405196, 2865756, 19652430, 135666717, 917861737, 6247996468, 41874859669, 281884085368, 1877330322718, 12537690094009, 83063782595536, 551574419251898, 3639691674489757, 24059481994135080

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OFFSET

1,2

COMMENTS

Row 3 of A267990.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..30

EXAMPLE

Some solutions for n=6

..1..0..1..0..0..1....0..1..1..2..1..0....0..2..0..0..1..2....0..1..2..0..0..0

..1..0..0..2..2..2....0..1..2..0..0..2....0..0..1..1..1..2....1..0..1..1..2..1

..0..2..1..1..2..2....2..1..0..1..2..2....1..0..1..2..2..2....2..2..0..2..1..2

CROSSREFS

Cf. A267990.

Sequence in context: A377166 A101645 A230692 * A060493 A198183 A259493

Adjacent sequences: A267989 A267990 A267991 * A267993 A267994 A267995

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 23 2016

STATUS

approved