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A221941 Number of 5Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without move-in move-out straight through or left turns 0
1, 2627, 376389, 84547866, 17626884659, 3719159201319, 782051177169672, 164583386567947853, 34629683921533060992, 7286522628060662000197 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 5 of A221937

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

..0..2..0....0..1..0....0..2..0....0..3..0....0..2..1....0..3..1....0..2..1

..0..3..0....3..1..0....1..2..0....0..3..1....1..2..1....0..1..1....0..3..2

..0..4..2....1..3..2....0..4..2....1..0..0....0..0..1....0..2..1....0..0..2

..0..0..0....0..0..2....0..0..2....0..4..1....2..1..2....1..0..1....1..0..1

..1..2..1....1..1..0....1..1..0....0..1..1....1..1..0....2..0..2....1..0..2

CROSSREFS

Sequence in context: A292175 A295482 A236621 * A234698 A190936 A020439

Adjacent sequences:  A221938 A221939 A221940 * A221942 A221943 A221944

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 01 2013

STATUS

approved

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Last modified December 5 18:48 EST 2021. Contains 349557 sequences. (Running on oeis4.)