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A185408 1/7 the number of nX5 0..6 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors 0
13, 22656, 12205368, 9560464068, 6409594156632 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A185409

LINKS

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

EXAMPLE

Some solutions for 3X5 with a(1,1)=0

..0..0..1..0..1....0..0..0..5..5....0..0..0..6..6....0..0..2..2..4

..0..0..1..0..1....0..1..1..3..0....0..1..1..4..4....0..1..1..6..4

..4..4..2..2..2....0..0..0..3..0....3..3..3..4..4....3..3..1..6..4

CROSSREFS

Sequence in context: A098562 A176183 A241879 * A123921 A145716 A124990

Adjacent sequences:  A185405 A185406 A185407 * A185409 A185410 A185411

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 26 2011

STATUS

approved

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Last modified April 12 17:48 EDT 2021. Contains 342929 sequences. (Running on oeis4.)