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A228971 Number of n X n 0..2 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1)X(n+1) 0..2 array. 0

%I

%S 3,81,19503,32175213,340872730929,23319328706411649,

%T 10480310456719980450885

%N Number of n X n 0..2 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1)X(n+1) 0..2 array.

%C Diagonal of A228977.

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Sep 10 2013

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Last modified January 24 00:05 EST 2022. Contains 350515 sequences. (Running on oeis4.)