A300687 - OEIS

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A300687

Number of nX6 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

5, 307, 7187, 150558, 3179333, 67479838, 1431755828, 30366081812, 643942334598, 13656056835393, 289603801565185, 6141624884160687, 130245342969245790, 2762110283944810229, 58576019807838267185, 1242220527820363713104

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

OFFSET

1,1

COMMENTS

Column 6 of A300689.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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