%I #7 Dec 18 2015 18:17:45
%S 4,46,1682,190514,67379894,74236765958,254948725307650,
%T 2728873272983950594,91038149737139587502854,
%U 9466106148769015848820814134,3067809430979519600024270636572850
%N Number of lower triangles of an n X n 0..3 array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by two or less
%C Column 3 of A195248
%H R. H. Hardin, <a href="/A195243/b195243.txt">Table of n, a(n) for n = 1..18</a>
%e Some solutions for n=5
%e ..1..........2..........1..........3..........0..........1..........0
%e ..0.2........2.1........0.2........1.1........2.1........1.3........2.1
%e ..2.0.2......2.0.0......2.1.3......1.1.2......0.2.2......3.3.1......0.2.2
%e ..0.0.1.3....2.1.1.2....0.2.1.3....3.2.1.1....2.1.1.0....3.1.1.3....2.1.1.0
%e ..0.1.2.3.3..1.2.2.1.0..2.1.3.3.3..2.1.2.2.3..1.0.0.1.2..2.3.2.2.1..1.0.0.1.2
%K nonn
%O 1,1
%A _R. H. Hardin_ Sep 13 2011