cp's OEIS Frontend

A194620 Half the number of lower triangles of a 7X7 0..n array with no element equal to the average of its horizontal and vertical neighbors.

%I A194620 #7 Jun 03 2025 15:33:49
%S A194620 1901849,202803700252,1988649454264015,1946585305112431165,
%T A194620 481414314393133400117,46519509694797259637061,
%U A194620 2430369828996738172677912
%N A194620 Half the number of lower triangles of a 7X7 0..n array with no element equal to the average of its horizontal and vertical neighbors.
%C A194620 Row 6 of A194615
%e A194620 Some solutions for n=2
%e A194620 ..0..............0..............0..............0..............0
%e A194620 ..1.0............1.0............1.0............1.0............1.0
%e A194620 ..0.0.1..........0.0.1..........0.0.1..........0.0.1..........0.0.1
%e A194620 ..0.0.0.0........0.0.0.0........0.0.0.0........0.0.0.0........0.0.0.0
%e A194620 ..1.1.0.2.2......1.1.0.1.2......1.1.0.1.1......1.1.0.1.0......1.1.0.1.2
%e A194620 ..0.0.0.2.1.2....0.0.0.0.2.2....0.0.0.2.2.1....0.0.2.0.2.0....0.0.1.0.1.2
%e A194620 ..0.1.1.0.0.0.2..1.1.1.0.0.1.0..1.0.2.0.0.1.0..0.1.0.1.0.1.2..1.1.1.2.1.1.2
%K A194620 nonn
%O A194620 1,1
%A A194620 _R. H. Hardin_ Aug 30 2011