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%I #6 Mar 31 2012 12:36:21
%S 4,36,77,1089,33123,2098879,268450093,68719637953,35184374010883,
%T 36028797051155647,73786976295548947437,302231454903676253269793,
%U 2475880078570761210896556355,40564819207303340877897838038559
%N Number of nXnXn triangular 0..3 arrays with no element equal to the sum or difference mod 4 of any two of its neighbors
%H R. H. Hardin, <a href="/A193833/b193833.txt">Table of n, a(n) for n = 1..24</a>
%e Some solutions for 4X4X4
%e .....2........1........2........2........2........2........2........1
%e ....2.2......2.2......3.3......3.2......2.2......3.3......3.3......1.1
%e ...2.2.2....2.2.2....3.2.2....2.3.3....3.3.2....3.2.2....2.2.2....4.4.1
%e ..3.2.2.2..2.2.1.2..2.2.2.2..2.2.3.2..3.2.2.3..3.2.2.3..2.3.3.2..4.4.4.1
%K nonn
%O 1,1
%A _R. H. Hardin_ Aug 06 2011
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