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A261753 Number of (n+1)X(n+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
2, 20, 19, 2673, 7014, 8124875, 78901198 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A261761.

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Cf. A261761.

Sequence in context: A343927 A221921 A012739 * A075031 A273466 A278938

Adjacent sequences:  A261750 A261751 A261752 * A261754 A261755 A261756

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 31 2015

STATUS

approved

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Last modified August 1 14:14 EDT 2021. Contains 346391 sequences. (Running on oeis4.)