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A187720 Number of (n+1)X(n+1) binary arrays with no 2X2 subblock commuting with any of its horizontal and vertical 2X2 subblock neighbors 0

%I #5 Mar 31 2012 12:36:09

%S 16,174,3698,161571,13555195,2287444987,755272970945,491415809239410,

%T 627561470269866658,1574769693877593164368

%N Number of (n+1)X(n+1) binary arrays with no 2X2 subblock commuting with any of its horizontal and vertical 2X2 subblock neighbors

%C Diagonal of A187729

%e Some solutions for 3X3

%e ..0..0..1....1..0..1....1..0..1....0..1..1....1..1..1....1..0..0....1..1..1

%e ..1..1..1....1..1..0....1..1..0....0..1..0....0..0..1....1..0..1....0..1..0

%e ..0..1..0....1..1..0....1..1..1....1..1..1....1..0..1....1..1..0....1..0..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 13 2011

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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)