%I #6 Sep 04 2022 15:15:56
%S 8,1934,15569,251254,3018243,42508145,553097760,7403262824,
%T 97939043966,1301831347709,17275065368012,229303687769069,
%U 3043569120232324,40395942785616147,536209245725631300,7116991167351864042
%N Number of n X 7 0..1 arrays with every element equal to 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
%C Column 7 of A302224.
%H R. H. Hardin, <a href="/A302223/b302223.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..0..1..1..0..0..1. .0..0..1..1..0..0..1. .0..0..1..1..1..1..0
%e ..0..1..1..0..1..1..0. .0..1..0..1..0..1..1. .0..1..0..0..0..0..1
%e ..0..0..1..0..1..1..0. .0..1..0..1..0..1..1. .0..1..1..0..1..1..0
%e ..0..1..1..0..0..0..1. .0..0..1..0..0..0..1. .0..0..1..0..1..0..0
%e ..0..0..1..1..1..1..0. .1..1..1..0..1..1..1. .1..1..0..0..1..1..1
%Y Cf. A302224.
%K nonn
%O 1,1
%A _R. H. Hardin_, Apr 03 2018