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

%I #4 Apr 03 2018 12:19:28

%S 0,111,675,4237,40395,338204,3018243,26373655,229022022,2020776808,

%T 17623530150,154526692002,1354126269239,11852307962264,

%U 103884063578946,909810907872807,7970268921853663,69825955304629074,611653034702238664

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

%C Row 5 of A302224.

%H R. H. Hardin, <a href="/A302228/b302228.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A302224.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 03 2018