The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A261945

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A261945

Number of (3+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.
(history; published version)

#3 by R. H. Hardin at Sun Sep 06 07:56:29 EDT 2015

STATUS

editing

approved

#2 by R. H. Hardin at Sun Sep 06 07:56:25 EDT 2015

NAME

allocated for R. H. Hardin

Number of (3+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.

DATA

0, 5, 218, 746, 10906, 72186, 588090, 3656900, 26647829, 180803752, 1093944096, 6533839983, 43705331783

OFFSET

1,2

COMMENTS

Row 3 of A261942.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A261942.

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Sep 06 2015

STATUS

approved

editing

#1 by R. H. Hardin at Sun Sep 06 07:48:52 EDT 2015

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved