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 A221615 Number of 7Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without move-in move-out left turns 0
 0, 64, 42810, 41480899, 33145684280, 27294219603383, 22596355738886108, 18795109923272155626 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 7 of A221609 LINKS EXAMPLE Some solutions for n=3 ..0..2..1....1..1..0....1..1..0....1..1..0....0..2..1....1..1..0....0..2..1 ..0..2..0....1..3..0....1..3..0....1..3..0....1..1..0....1..2..0....0..2..0 ..2..2..0....0..2..0....0..3..1....0..2..2....0..3..0....1..3..0....1..2..0 ..0..3..1....2..2..0....0..2..1....0..2..1....2..2..0....0..2..2....1..2..0 ..0..1..0....1..2..0....0..1..2....0..2..1....0..2..1....0..2..1....2..1..0 ..1..2..0....0..1..1....0..3..0....0..3..0....1..2..0....0..3..0....1..2..0 ..2..2..0....1..3..0....1..1..0....0..1..1....1..2..0....1..1..0....1..3..0 CROSSREFS Sequence in context: A223353 A098843 A159400 * A141092 A283924 A016830 Adjacent sequences:  A221612 A221613 A221614 * A221616 A221617 A221618 KEYWORD nonn AUTHOR R. H. Hardin Jan 20 2013 STATUS approved

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Last modified October 18 14:52 EDT 2019. Contains 328161 sequences. (Running on oeis4.)