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A300942 Number of nX6 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Mar 16 2018 09:05:42

%S 13,6,47,186,836,3873,16587,77438,373184,1821648,8941824,44058575,

%T 218133889,1083495226,5395009930,26905649476,134280333749,

%U 670528898740,3349651614840,16737836364340,83651967346499,418123829380174

%N Number of nX6 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 6 of A300944.

%H R. H. Hardin, <a href="/A300942/b300942.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300944.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 16 2018

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Last modified April 19 09:23 EDT 2024. Contains 371782 sequences. (Running on oeis4.)