A320361 - OEIS

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A320361

Number of nX5 0..1 arrays with every element unequal to 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

0, 5, 60, 657, 7902, 91711, 1076811, 12633183, 148082443, 1736213698, 20357548449, 238693491568, 2798676228713, 32814460150445, 384749618366454, 4511189841036949, 52893701506634832, 620178660144475112

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

OFFSET

1,2

COMMENTS

Column 5 of A320364.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=5

..0..1..0..0..1. .0..1..0..1..0. .0..1..0..0..1. .0..1..0..0..1

..1..1..1..1..0. .1..1..1..0..1. .1..0..1..1..0. .1..1..0..1..0

..0..1..1..0..1. .0..1..0..0..1. .1..0..1..0..1. .0..0..0..1..0