A261946 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A261946

Number of (4+1)X(n+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, 12, 1878, 7943, 351513, 3016874, 64650845, 773758878, 10301327801

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Row 4 of A261942.

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=4

..1..0..0..0..0....0..1..0..0..0....1..0..1..0..0....0..0..1..1..0

..0..1..1..0..0....0..1..0..1..0....0..1..0..0..0....0..0..0..0..0

..1..0..1..0..0....0..1..0..0..1....0..1..0..1..0....0..1..0..0..0

..1..1..0..1..1....1..1..1..1..0....1..0..1..0..1....1..1..0..1..1

..1..1..1..0..0....1..1..0..1..1....1..1..1..1..0....1..1..1..1..0

CROSSREFS

Cf. A261942.

Sequence in context: A049405 A229752 A104009 * A015028 A167745 A326601

Adjacent sequences: A261943 A261944 A261945 * A261947 A261948 A261949

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 06 2015

STATUS

approved