%I #4 Jan 04 2018 21:57:45

%S 21,865,14462,336653,8103241,183324631,4238895126,98184350818,

%T 2265008802005,52325664406022,1208931244861130,27923747107250179,

%U 645039373054891828,14900511436264593319,344198253865046283579

%N Number of nX6 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.

%C Column 6 of A297720.

%H R. H. Hardin, <a href="/A297718/b297718.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%Y Cf. A297720.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 04 2018