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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
OFFSET
1,2
COMMENTS
Row 5 of A281653.
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 26 2017
STATUS
approved