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A261949 Number of (7+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
0, 112, 352480, 2840132, 2499416567, 30673550964 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 7 of A261942.

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for n=2:

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

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

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

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

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

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

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

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

CROSSREFS

Cf. A261942.

Sequence in context: A270113 A275052 A180039 * A159432 A151645 A115486

Adjacent sequences:  A261946 A261947 A261948 * A261950 A261951 A261952

KEYWORD

nonn,more

AUTHOR

R. H. Hardin, Sep 06 2015

STATUS

approved

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Last modified June 16 21:55 EDT 2021. Contains 345080 sequences. (Running on oeis4.)