A300972 - OEIS

%I #4 Mar 17 2018 07:22:02

%S 8,1568,122043,8926774,673550354,50812633429,3830408271334,

%T 288757143760689,21768367076769721,1641036899910007681,

%U 123711666663261563598,9326162991014646538811,703064781446983855135971

%N Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 7 of A300973.

%H R. H. Hardin, <a href="/A300972/b300972.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300973.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 17 2018