A261948 - OEIS

A261948

Number of (6+1)X(n+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, 57, 57243, 367390, 115507073, 1247810761

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Row 6 of A261942.

LINKS

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

..1..1..1..1....1..1..1..1....1..1..1..1....1..1..1..1....1..1..1..1

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 06 2015

STATUS

approved