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Majority value maps: number of n X n binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..3 n X n array
0

%I #5 Dec 18 2015 18:18:26

%S 1,7,228,24485,12253352,23379869304,184428463987187,

%T 5729938855632345013

%N Majority value maps: number of n X n binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..3 n X n array

%C Diagonal of A221499

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 18 2013