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 A262113 Number of (4+1)X(n+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 #3 Sep 11 2015 09:43:24

%S 171,18933,1518344,118115088,8260429504

%N Number of (4+1)X(n+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 Row 4 of A262109.

%e Some solutions for n=2

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

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

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

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

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

%Y Cf. A262109.

%K nonn

%O 1,1

%A _R. H. Hardin_, Sep 11 2015

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Last modified July 14 02:38 EDT 2024. Contains 374291 sequences. (Running on oeis4.)