A300462 - OEIS

%I #4 Mar 06 2018 11:27:25

%S 0,9,22,142,1146,7456,55663,400028,2906875,21162204,153677233,

%T 1117612488,8123629685,59057261422,429317113075,3120977422852,

%U 22688267741133,164934718709179,1199012026918226,8716348960310287,63364478025520501

%N Number of nX5 0..1 arrays with every element equal to 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 5 of A300465.

%H R. H. Hardin, <a href="/A300462/b300462.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300465.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 06 2018