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A185902 1/8 the number of nX5 0..7 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors 0

%I #6 Mar 31 2012 12:36:04

%S 15,38731,28967421,32611077940,30884279980274

%N 1/8 the number of nX5 0..7 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors

%C Column 5 of A185903

%e Some solutions for 3X5 with a(1,1)=0

%e ..0..4..0..0..4....0..0..6..6..6....0..0..0..2..6....0..0..6..6..0

%e ..0..4..6..0..4....4..4..4..0..0....0..4..4..2..6....4..4..4..0..0

%e ..0..4..6..0..4....0..0..4..5..5....0..0..4..2..6....4..0..0..7..7

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 06 2011

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)