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A255141 Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 1 and no column sum 1 0

%I #4 Feb 15 2015 09:32:17

%S 47,371,6271,190731,10864279,1141237349,215697143322,73492753345771,

%T 45252431432900378,50274563122404978583,100732007486237755775772,

%U 364115407117554783582241759

%N Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 1 and no column sum 1

%C Diagonal of A255149

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A255149

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 15 2015

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)