A221799 - OEIS

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A221799

Number of nX6 arrays of occupancy after each element moves to some horizontal or vertical neighbor, without move-in move-out straight through or left turns

1, 338, 4073, 308070, 8348792, 399279970, 13922688699, 579257407874, 21834235656858, 870030406828016, 33601209785307294, 1320837497060408788, 51404875754751391265, 2011965871277470408364, 78494607904200406501896

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Column 6 of A221800

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..16

EXAMPLE

Some solutions for n=3

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

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

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