A261941 Number of (n+1)X(6+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, 5826, 72186, 3016874, 52973290, 1247810761, 30673550964

Offset

1,2

Comments

Column 6 of A261942.

Links

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

Example

Some solutions for n=3
..1..0..0..0..0..0..1....0..1..0..1..0..0..0....0..1..1..1..0..0..1
..1..1..1..0..0..1..1....0..0..1..1..1..0..0....0..0..0..1..0..0..0
..0..1..0..1..1..0..0....1..1..0..0..0..1..1....1..1..1..0..1..1..1
..1..1..1..0..0..1..1....0..1..1..1..1..0..0....1..1..1..1..0..0..1

Crossrefs

Cf. A261942.

Sequence in context: A237477 A131494 A234804 * A264887 A035903 A251189

Adjacent sequences: A261938 A261939 A261940 * A261942 A261943 A261944

Keyword

nonn

Author

R. H. Hardin, Sep 06 2015

Status

approved