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A185822 1/5 the number of nX6 0..4 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors 0
29, 49248, 35446376, 32995092992, 28043363244452 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A185825

LINKS

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

EXAMPLE

Some solutions for 4X6 with a(1,1)=0

..0..0..1..1..4..4....0..0..2..2..0..0....0..0..4..4..2..2....0..0..0..3..2..3

..0..1..0..2..2..4....0..1..0..0..0..1....0..1..0..4..1..2....0..1..0..3..2..3

..0..1..0..2..0..2....0..1..0..2..1..1....0..1..0..2..1..2....0..1..0..2..4..4

..0..0..0..2..0..2....0..0..0..2..4..4....0..0..0..2..3..3....0..0..0..2..4..4

CROSSREFS

Sequence in context: A274545 A296176 A159437 * A321666 A139775 A303734

Adjacent sequences:  A185819 A185820 A185821 * A185823 A185824 A185825

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 05 2011

STATUS

approved

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Last modified December 2 10:39 EST 2020. Contains 338876 sequences. (Running on oeis4.)