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A300935 Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Mar 16 2018 08:55:42

%S 32,383,1225,4781,21787,97745,399796,1701284,7433503,32417536,

%T 140360415,609184367,2654263514,11566795167,50371762399,219467643962,

%U 956898961507,4173024718286,18199035218402,79379381620061,346287240775232

%N Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 6 of A300937.

%H R. H. Hardin, <a href="/A300935/b300935.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300937.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 16 2018

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Last modified September 13 00:40 EDT 2024. Contains 375857 sequences. (Running on oeis4.)