A261940 Number of (n+1)X(5+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.

46, 1215, 10906, 351513, 5488030, 115507073, 2499416567

Offset

1,1

Comments

Column 5 of A261942.

Links

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

Example

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

Crossrefs

Cf. A261942.

Sequence in context: A320552 A211835 A333066 * A060561 A281321 A188412

Adjacent sequences: A261937 A261938 A261939 * A261941 A261942 A261943

Keyword

nonn

Author

R. H. Hardin, Sep 06 2015

Status

approved