A221791 - OEIS

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A221791

Number of 6Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops or left turns

0

0, 0, 1, 105, 4131, 109702, 4781652, 220782560, 12043488477, 578442771884

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

OFFSET

1,4

COMMENTS

Row 6 of A221787

LINKS

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

EXAMPLE

All solutions for n=3

..0..2..1

..1..2..0

..0..2..1

..1..2..0

..0..2..1

..1..2..0

CROSSREFS

Sequence in context: A112490 A006361 A360275 * A210138 A075350 A165055

Adjacent sequences: A221788 A221789 A221790 * A221792 A221793 A221794

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 25 2013

STATUS

approved