A261938 Number of (n+1)X(3+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.

10, 61, 218, 1878, 9350, 57243, 352480, 2438528, 15405064, 102528319, 707008477

Offset

1,1

Comments

Column 3 of A261942.

Links

Table of n, a(n) for n=1..11.

Example

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

Crossrefs

Cf. A261942.

Sequence in context: A354944 A041184 A089034 * A361535 A271790 A319965

Adjacent sequences: A261935 A261936 A261937 * A261939 A261940 A261941

Keyword

nonn

Author

R. H. Hardin, Sep 06 2015

Status

approved