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 A199089 Number of 4nX2 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 1
 5, 709, 127973, 26249645, 5813473253, 1354962283005, 327517079413293, 81354547180103625, 20640739602876893733, 5326171952368494472061, 1393506059395687309946181, 368808221492178082683574433 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 4n terms of column 2 of A199092 LINKS R. H. Hardin, Table of n, a(n) for n = 1..22 EXAMPLE Some solutions for 12X2 ..0..1....0..1....0..1....0..0....0..0....0..1....0..1....0..1....0..1....0..1 ..0..1....0..1....0..1....1..1....1..1....0..1....0..1....0..1....0..1....0..1 ..2..3....2..2....2..0....2..0....2..2....2..2....2..3....2..2....2..3....2..2 ..2..3....1..1....2..0....2..0....3..0....3..1....2..3....3..3....2..3....3..3 ..3..0....3..0....3..3....3..3....3..0....3..1....1..1....0..0....3..1....2..2 ..3..0....3..0....2..0....1..1....1..1....2..2....3..3....1..1....3..1....1..1 ..2..1....2..2....2..0....2..2....3..2....3..3....2..2....3..3....0..0....3..3 ..2..1....1..3....3..1....3..3....3..2....0..2....0..3....0..0....2..2....0..0 ..1..3....1..3....3..1....2..2....1..1....0..2....0..3....2..2....1..1....2..3 ..1..3....3..2....2..2....3..1....3..3....1..1....2..1....1..3....0..0....2..3 ..2..2....3..2....3..1....3..1....2..0....3..0....2..1....1..3....3..2....1..0 ..0..0....0..0....3..1....0..0....2..0....3..0....0..0....2..2....3..2....1..0 CROSSREFS Sequence in context: A201005 A255912 A213932 * A260481 A157281 A171269 Adjacent sequences:  A199086 A199087 A199088 * A199090 A199091 A199092 KEYWORD nonn AUTHOR R. H. Hardin Nov 02 2011 STATUS approved

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Last modified January 23 16:17 EST 2021. Contains 340385 sequences. (Running on oeis4.)