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 A199092 T(n,k)=Number of nXk 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and every element equal to exactly one horizontal or vertical neighbor 4
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 420, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 709, 0, 44837, 0, 44837, 0, 709, 0, 0, 0, 24353, 0, 0, 0, 0, 24353, 0, 0, 0, 0, 0, 5471810, 0, 0, 0, 5471810, 0, 0, 0, 0, 0, 0, 0, 349276385, 0, 0, 349276385, 0, 0, 0, 0, 0 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,12 COMMENTS Table starts .0...0.....0.........0.........0...........0.0...........1.0.........0.0......0 .0...0.....0.........5.........0...........0.0.........709.0.........0.0.127973 .0...0.....0.........0.........0...........0.0.......24353.0.........0.0......0 .0...5.....0.......420.........0.......44837.0.....5471810.0.726413391.0....... .0...0.....0.........0.........0...........0.0...349276385.0.........0......... .0...0.....0.....44837.........0...........0.0.59171718202.0................... .0...0.....0.........0.........0...........0.0................................. .1.709.24353...5471810.349276385.59171718202................................... .0...0.....0.........0.........0............................................... .0...0.....0.726413391......................................................... LINKS R. H. Hardin, Table of n, a(n) for n = 1..97 EXAMPLE Some solutions for 6X4 ..0..0..1..2....0..0..1..1....0..0..1..1....0..1..2..0....0..1..2..2 ..3..3..1..2....2..2..3..3....2..2..3..3....0..1..2..0....0..1..0..0 ..0..2..2..1....1..1..2..2....0..0..2..2....2..2..3..3....3..3..1..1 ..0..3..3..1....3..2..3..3....1..1..0..3....3..3..2..1....2..2..3..3 ..2..2..0..3....3..2..0..0....3..3..0..3....1..1..2..1....0..3..2..1 ..1..1..0..3....0..0..1..1....1..1..2..2....0..0..3..3....0..3..2..1 CROSSREFS Sequence in context: A157700 A099645 A220412 * A167260 A137520 A010676 Adjacent sequences:  A199089 A199090 A199091 * A199093 A199094 A199095 KEYWORD nonn,tabl AUTHOR R. H. Hardin Nov 02 2011 STATUS approved

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Last modified May 22 00:02 EDT 2022. Contains 353931 sequences. (Running on oeis4.)