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 A221761 Number of 7Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without move-in move-out straight through or left turns 0
 0, 64, 0, 45956, 381174, 122732982, 4330440582 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 7 of A221755 LINKS EXAMPLE Some solutions for n=4 ..0..2..1..1....1..1..0..2....0..2..0..2....1..1..1..1....0..2..1..2 ..1..1..1..1....0..2..1..1....2..0..2..0....0..2..1..1....1..0..1..1 ..0..2..2..0....2..0..1..1....0..2..0..2....2..0..0..2....1..1..1..1 ..2..0..1..1....1..1..2..0....2..0..2..0....1..1..2..0....1..1..2..0 ..1..1..1..1....0..2..2..1....1..1..0..2....1..1..0..2....1..1..0..2 ..0..2..1..1....1..0..0..1....1..1..2..0....0..2..2..0....1..1..2..0 ..2..0..1..1....1..2..2..0....1..1..1..1....2..0..1..1....1..1..1..1 CROSSREFS Sequence in context: A243775 A066608 A247067 * A085339 A203262 A174927 Adjacent sequences:  A221758 A221759 A221760 * A221762 A221763 A221764 KEYWORD nonn AUTHOR R. H. Hardin Jan 24 2013 STATUS approved

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Last modified January 22 22:16 EST 2020. Contains 331166 sequences. (Running on oeis4.)