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Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum prime and every diagonal and antidiagonal sum nonprime
0

%I #4 Dec 11 2014 12:41:43

%S 1462,1182,2272,8937,87011,1086474,14138322,436167357,12334046416,

%T 356669730440,35647683078113,2204964623058818,140143700163510981,

%U 47432080346448287439,6173305080134157592975,856348374772825549372487

%N Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum prime and every diagonal and antidiagonal sum nonprime

%C Diagonal of A251950

%e Some solutions for n=4

%e ..0..3..2..0..0..2....0..2..0..0..2..3....1..1..3..1..1..3....0..1..1..3..1..1

%e ..1..1..0..1..1..3....1..3..1..1..0..1....0..0..2..0..0..2....2..3..0..2..0..0

%e ..1..1..3..1..1..0....1..0..1..1..3..1....1..1..0..1..1..0....0..1..1..0..1..1

%e ..0..0..2..0..3..2....0..2..3..0..2..0....1..1..0..1..1..0....3..1..1..0..1..1

%e ..1..1..0..1..1..0....1..0..1..1..0..1....3..0..2..0..0..2....2..0..3..2..0..0

%e ..1..1..0..1..1..3....1..3..1..1..0..1....1..1..0..1..1..0....0..1..1..0..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 11 2014