%I #4 Mar 04 2018 09:19:37
%S 1,74,131,692,6577,53367,481311,4070089,36505624,319929622,2837476138,
%T 25246596055,223898861023,1988295398102,17653104464628,
%U 156742758122408,1391761200734035,12357651656612721,109729025922860987
%N Number of nX7 0..1 arrays with every element equal to 0, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
%C Column 7 of A300380.
%H R. H. Hardin, <a href="/A300379/b300379.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..0..1. .0..1..1..0..1..0..0
%e ..0..1..0..1..0..1..0. .0..1..0..1..0..1..1. .1..0..1..1..1..0..0
%e ..0..0..0..0..1..1..0. .1..1..0..0..1..0..1. .1..1..0..0..1..1..1
%e ..1..1..1..1..0..0..1. .0..0..1..0..1..1..0. .0..0..1..0..0..1..0
%e ..1..0..1..0..0..1..1. .0..1..1..0..0..0..0. .0..1..1..0..0..0..0
%Y Cf. A300380.
%K nonn
%O 1,2
%A _R. H. Hardin_, Mar 04 2018