A221813 - OEIS

A221813

Number of 5Xn arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out straight through or left turns

0, 1156, 30716, 6328365, 462706496, 54679689449, 5044723744009, 526749494838582

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

OFFSET

1,2

COMMENTS

Row 5 of A221809

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A157168 A062915 A225938 * A232004 A034979 A189279

Adjacent sequences: A221810 A221811 A221812 * A221814 A221815 A221816

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 26 2013

STATUS

approved