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A262106 Number of (n+1)X(1+1) 0..2 arrays with each row nonprime and column prime, read as a base 3 number with top and left being the most significant digits. 0

%I

%S 7,17,54,171,554,1926,6976,25923,99597,395785

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

%C Column 1 of A262109.

%e Some solutions for n=4

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

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

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

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

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

%Y Cf. A262109.

%K nonn

%O 1,1

%A _R. H. Hardin_, Sep 11 2015

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Last modified October 6 07:09 EDT 2022. Contains 357262 sequences. (Running on oeis4.)