%I
%S 4,6,18,34,86,180,426,930,2140,4758,10818,24240,54834,123274,278260,
%T 626446,1412746,3182416,7174106,16164834,36434260,82103270,185041218,
%U 417002816,939796802,2117936730,4773120596,10756848350,24242204506
%N Number of 2 X n arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random 0..1 2 X n array.
%C Row 2 of A218897.
%H R. H. Hardin, <a href="/A218898/b218898.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = a(n1) + 3*a(n2)  2*a(n5).
%F Empirical g.f.: 2*x*(2 + x  x^3  x^4) / (1  x  3*x^2 + 2*x^5).  _Colin Barker_, Jul 24 2018
%e Some solutions for n=3:
%e ..1..0..1....0..0..1....1..1..1....0..0..1....1..0..0....0..0..0....1..0..0
%e ..0..0..0....0..0..0....1..1..1....1..0..1....1..0..0....0..0..0....1..0..1
%Y Cf. A218897.
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 08 2012
