A300928 - OEIS

%I #4 Mar 15 2018 18:59:49

%S 5,450,23404,1155263,57594572,2875574552,143498589629,7160975085336,

%T 357354070296570,17833027051203085,889920824531940198,

%U 44409682947730021006,2216174612863105824139,110593672103195176997181

%N Number of nX6 0..1 arrays with every element equal to 1, 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 6 of A300930.

%H R. H. Hardin, <a href="/A300928/b300928.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300930.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 15 2018