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Number of (n+2)X(n+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime
0

%I #4 Dec 09 2014 11:23:13

%S 345,538,1754,22922,504148,17562309,937980816,77093723774,

%T 9818091214983,1923038551366940,579363831610999841,

%U 269256446506102900848,192945586040744107579841,212997867807414690141275523

%N Number of (n+2)X(n+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime

%C Diagonal of A251819

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 09 2014