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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 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.)