A302430 - OEIS

%I #4 Apr 07 2018 17:24:06

%S 16,21,51,148,372,1359,4223,12765,36991,120577,379049,1163511,3513789,

%T 11057011,34615371,107067003,328256519,1021668031,3184852651,

%U 9877177123,30474354613,94542321045,293938006889,912146326937,2822284649841

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

%C Row 5 of A302427.

%H R. H. Hardin, <a href="/A302430/b302430.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A302427.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 07 2018