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.

2, 20, 19, 2673, 7014, 8124875, 78901198

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