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Number of nXnXn triangular 0..7 arrays with each element equal to the product mod 8 of two neighbors
0

%I #4 Mar 31 2012 12:36:21

%S 0,17,257,95633,157793394,1646136115844

%N Number of nXnXn triangular 0..7 arrays with each element equal to the product mod 8 of two neighbors

%e Some solutions for 4X4X4

%e .....6........4........1........1........7........1........7........1

%e ....5.6......1.4......5.5......5.5......5.3......1.1......5.3......1.1

%e ...5.1.0....1.1.4....6.2.1....5.5.0....5.3.1....5.1.1....7.5.7....2.3.4

%e ..4.4.0.0..3.3.0.0..4.6.7.7..5.1.0.0..5.1.0.0..1.5.1.1..3.5.3.5..2.5.7.4

%K nonn

%O 1,2

%A _R. H. Hardin_ Jul 22 2011