A261757 Number of (n+1) X (4+1) 0..1 arrays with each row and column prime, read as a binary number with top and left being the most significant bits.

11, 100, 99, 2673, 4797, 53564, 174125, 1264975, 5828759, 28376885

Offset

1,1

Comments

Column 4 of A261761.

Links

Table of n, a(n) for n=1..10.

Example

Some solutions for n=4
..0..1..0..1..1....1..0..0..0..1....0..1..1..0..1....1..0..0..1..1
..0..0..1..1..1....0..0..0..1..0....0..0..0..1..0....1..0..0..0..1
..0..0..0..1..1....1..1..1..0..1....0..0..1..0..1....1..1..1..1..1
..1..1..1..0..1....1..0..0..1..1....1..1..1..1..1....0..0..0..1..0
..1..1..1..1..1....1..1..1..1..1....1..1..1..1..1....1..1..1..1..1

Crossrefs

Cf. A261761.

Sequence in context: A287461 A288402 A287984 * A377925 A280049 A066329

Adjacent sequences: A261754 A261755 A261756 * A261758 A261759 A261760

Keyword

nonn

Author

R. H. Hardin, Aug 31 2015

Status

approved