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Number of (n+1)X(1+1) 0..2 arrays with each row and column prime, read as a base 3 number with top and left being the most significant digits.
0

%I #3 Sep 11 2015 13:31:28

%S 5,5,23,47,133,369,1206,3427,11146,37720,122198,411529,1414251,4916092

%N Number of (n+1)X(1+1) 0..2 arrays with each row and column prime, read as a base 3 number with top and left being the most significant digits.

%C Column 1 of A262122.

%e Some solutions for n=4

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

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

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

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

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

%Y Cf. A262122.

%K nonn

%O 1,1

%A _R. H. Hardin_, Sep 11 2015