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 A281657 Number of 5Xn 0..2 arrays with no element equal to more than one of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. 1
 0, 2894, 104815, 2159590, 48871479, 955490042, 18092139475, 334914604224, 6058290906233, 107920205083282, 1899220467260750, 33088963050484262, 571760413613053121, 9811548539803374962, 167377398458564403677 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 5 of A281653. LINKS R. H. Hardin, Table of n, a(n) for n = 1..59 EXAMPLE Some solutions for n=3 ..0..0..0. .0..1..1. .0..1..0. .0..1..1. .0..1..1. .0..1..0. .0..0..1 ..1..2..1. .0..2..2. .1..2..0. .1..2..0. .0..0..0. .2..1..0. .1..1..2 ..2..0..1. .1..0..0. .1..0..0. .2..0..1. .2..1..0. .2..2..2. .2..0..2 ..2..1..2. .0..1..2. .2..2..1. .2..0..1. .0..1..2. .1..1..2. .1..0..2 ..0..1..0. .0..1..0. .1..0..1. .2..1..0. .1..2..0. .0..0..2. .1..2..1 CROSSREFS Cf. A281653. Sequence in context: A235816 A235819 A235575 * A234886 A236655 A235822 Adjacent sequences:  A281654 A281655 A281656 * A281658 A281659 A281660 KEYWORD nonn AUTHOR R. H. Hardin, Jan 26 2017 STATUS approved

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Last modified August 10 16:24 EDT 2022. Contains 356039 sequences. (Running on oeis4.)