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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. 1

%I

%S 5,307,7187,150558,3179333,67479838,1431755828,30366081812,

%T 643942334598,13656056835393,289603801565185,6141624884160687,

%U 130245342969245790,2762110283944810229,58576019807838267185,1242220527820363713104

%N 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.

%C Column 6 of A300689.

%H R. H. Hardin, <a href="/A300687/b300687.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..0..0..0..1..0..1. .0..0..0..0..1..1. .0..0..0..0..1..0. .0..0..0..0..1..0

%e ..0..1..1..0..0..1. .0..1..0..1..0..1. .0..1..0..1..0..1. .0..1..0..1..0..0

%e ..0..0..1..1..0..0. .0..1..1..1..0..1. .0..1..1..0..1..0. .0..1..0..1..0..1

%e ..0..1..0..1..0..0. .0..0..0..1..0..0. .0..0..1..1..1..0. .0..1..0..0..1..0

%e ..1..0..0..1..1..1. .1..1..0..1..0..0. .1..1..0..0..1..0. .1..0..1..1..0..0

%Y Cf. A300689.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 11 2018

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Last modified June 28 21:04 EDT 2022. Contains 354907 sequences. (Running on oeis4.)