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A261938 Number of (n+1)X(3+1) 0..1 arrays with each row nonprime and column prime, read as a binary number with top and left being the most significant bits. 0
10, 61, 218, 1878, 9350, 57243, 352480, 2438528, 15405064, 102528319, 707008477 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A261942.

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=4

..0..0..0..1....1..0..0..1....0..1..0..0....1..0..1..0....1..0..0..1

..0..1..1..0....0..0..0..0....0..0..0..0....1..0..0..1....1..1..0..0

..1..0..0..0....0..1..1..0....0..1..1..0....1..0..1..0....1..0..1..0

..0..1..1..0....1..0..0..1....1..1..1..1....1..1..1..1....1..1..1..0

..1..1..1..1....1..1..1..1....0..1..1..0....1..1..1..1....1..1..1..1

CROSSREFS

Cf. A261942.

Sequence in context: A218427 A041184 A089034 * A271790 A319965 A025574

Adjacent sequences:  A261935 A261936 A261937 * A261939 A261940 A261941

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 06 2015

STATUS

approved

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Last modified July 12 18:03 EDT 2020. Contains 335666 sequences. (Running on oeis4.)