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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.
0
0, 5, 218, 746, 10906, 72186, 588090, 3656900, 26647829, 180803752, 1093944096, 6533839983, 43705331783
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 3 of A261942.
LINKS
Table of n, a(n) for n=1..13.
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.
Sequence in context: A159317 A345465 A346196 * A024070 A290179 A050617
Adjacent sequences: A261942 A261943 A261944 * A261946 A261947 A261948
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 06 2015
STATUS
approved

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Last modified September 30 15:13 EDT 2024. Contains 376364 sequences.
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