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 A221784 Number of n X 5 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops or left turns. 0
 0, 8, 24, 173, 744, 4131, 19998, 104035, 520922, 2661269, 13452654, 68382023, 346582048, 1759291193, 8923150696, 45277608445 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 5 of A221787. LINKS Table of n, a(n) for n=1..16. EXAMPLE Some solutions for n=3 ..0..1..1..1..1....0..2..2..1..1....0..2..2..2..1....0..2..2..1..1 ..0..2..2..2..0....0..1..0..1..0....0..1..2..1..0....0..2..0..1..0 ..0..1..2..2..0....1..2..2..2..0....0..1..1..2..0....1..1..2..2..0 CROSSREFS Cf. A221787. Sequence in context: A100042 A061027 A226962 * A052656 A094061 A182589 Adjacent sequences: A221781 A221782 A221783 * A221785 A221786 A221787 KEYWORD nonn AUTHOR R. H. Hardin, Jan 25 2013 STATUS approved

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Last modified September 22 21:28 EDT 2023. Contains 365531 sequences. (Running on oeis4.)