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A302671 Number of 5Xn 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I

%S 0,111,691,4267,42367,352174,3204956,28324200,248482982,2223806395,

%T 19612845211,174147277424,1545345042448,13690754212668,

%U 121518036637399,1077456338230779,9556752221812425,84773605649902772,751847387040101232

%N Number of 5Xn 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Row 5 of A302670.

%H R. H. Hardin, <a href="/A302671/b302671.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A302670.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 11 2018

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Last modified September 26 12:17 EDT 2022. Contains 356997 sequences. (Running on oeis4.)