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A195246 Number of lower triangles of an n X n 0..6 array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by two or less 0

%I #5 Dec 18 2015 18:17:45

%S 7,103,4823,709613,329060365,481573562101,2226347741716207,

%T 32533092875899015419,1503300467938958707014579,

%U 219724247440207348239797551059,101603289677502667519178169906161081

%N Number of lower triangles of an n X n 0..6 array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by two or less

%C Column 6 of A195248

%e Some solutions for n=5

%e ..2..........0..........4..........4..........2..........4..........1

%e ..4.4........2.2........3.5........4.6........1.3........3.2........0.1

%e ..5.6.4......4.4.3......4.5.4......5.6.6......1.3.2......4.3.1......0.2.1

%e ..4.6.6.6....2.2.4.4....3.3.4.4....6.6.6.4....2.2.1.0....2.2.2.3....0.1.0.0

%e ..4.6.5.5.6..4.4.3.4.3..3.2.3.4.2..5.4.5.6.6..0.2.0.1.2..0.1.1.3.1..1.2.2.0.1

%K nonn

%O 1,1

%A _R. H. Hardin_ Sep 13 2011

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