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 A221674 Number of nX3 arrays of occupancy after each element moves to some horizontal or vertical neighbor, without move-in move-out left turns 1
 2, 27, 400, 5741, 81910, 1165913, 16583044, 235810525, 3352967744, 47674475534, 677859111916, 9638113778155, 137039061732784, 1948482984616486, 27704405262039888, 393913655872817605, 5600840943900558440 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A221676 LINKS R. H. Hardin, Table of n, a(n) for n = 1..97 EXAMPLE Some solutions for n=3 ..0..2..1....1..1..1....2..1..0....2..1..0....2..2..0....1..1..1....1..3..1 ..0..1..1....2..1..1....0..0..1....1..1..3....0..0..1....2..1..2....1..1..0 ..0..2..2....0..1..1....1..3..1....0..0..1....1..2..1....0..0..1....0..1..1 CROSSREFS Sequence in context: A121971 A278790 A277832 * A240701 A240638 A245050 Adjacent sequences: A221671 A221672 A221673 * A221675 A221676 A221677 KEYWORD nonn AUTHOR R. H. Hardin Jan 21 2013 STATUS approved

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Last modified March 28 15:29 EDT 2023. Contains 361596 sequences. (Running on oeis4.)