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 A261758 Number of (n+1)X(5+1) 0..1 arrays with each row and column prime, read as a binary number with top and left being the most significant bits. 0

%I #3 Aug 31 2015 07:17:51

%S 0,165,138,4797,7014,82711,229036,1430550,5704715,29016693

%N Number of (n+1)X(5+1) 0..1 arrays with each row and column prime, read as a binary number with top and left being the most significant bits.

%C Column 5 of A261761.

%e Some solutions for n=4

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

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

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

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

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

%Y Cf. A261761.

%K nonn

%O 1,2

%A _R. H. Hardin_, Aug 31 2015

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Last modified December 8 16:32 EST 2023. Contains 367680 sequences. (Running on oeis4.)