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Number of nX7 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1

%I #4 Apr 05 2018 09:37:53

%S 21,363,275,2048,4772,18992,76642,364922,1991487,11850372,74391348,

%T 486418706,3257213385,22149432404,152046330078,1049873091893,

%U 7276150005243,50546516116050,351666937737820,2449012961612884

%N Number of nX7 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Column 7 of A302309.

%H R. H. Hardin, <a href="/A302308/b302308.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A302309.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 05 2018