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A262106 Number of (n+1)X(1+1) 0..2 arrays with each row nonprime and column prime, read as a base 3 number with top and left being the most significant digits. 0
7, 17, 54, 171, 554, 1926, 6976, 25923, 99597, 395785 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A262109.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=4

..0..0....2..2....0..0....0..0....2..2....2..2....0..0....2..2....0..1....2..2

..0..0....2..0....2..2....0..0....2..2....0..1....0..0....1..1....0..1....0..0

..0..0....2..0....2..0....0..1....0..0....2..2....0..0....2..2....2..0....0..0

..1..1....1..1....2..2....0..0....2..2....0..1....1..1....1..1....1..1....0..0

..2..0....2..2....1..1....2..2....1..1....1..1....2..2....1..1....2..2....1..1

CROSSREFS

Cf. A262109.

Sequence in context: A115914 A352616 A094534 * A081632 A276907 A293464

Adjacent sequences:  A262103 A262104 A262105 * A262107 A262108 A262109

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 11 2015

STATUS

approved

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Last modified August 18 10:34 EDT 2022. Contains 356212 sequences. (Running on oeis4.)