A186628 - OEIS

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A186628

Number of (n+2)X5 0..3 arrays with 3X3 subblock sums nondecreasing rightwards and downwards.

349839616, 80485522400, 18496850510312, 3990816642970118, 507626088316719132

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 3 of A186629

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for 4X5

..0..0..0..0..1....0..0..2..0..3....0..0..2..0..0....0..0..0..0..3

..0..0..1..0..1....0..0..2..0..2....0..0..0..0..1....0..0..3..0..3

..0..2..3..0..0....0..2..0..0..0....0..0..0..0..1....0..2..3..0..1

..0..0..2..0..2....0..2..2..0..3....0..2..2..0..1....0..0..2..0..3

CROSSREFS

Sequence in context: A358705 A015381 A257384 * A032757 A288273 A219271

Adjacent sequences: A186625 A186626 A186627 * A186629 A186630 A186631

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 24 2011

STATUS

approved