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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
OFFSET
1,1
COMMENTS
Column 1 of A262109.
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 * A371715 A081632 A276907
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 11 2015
STATUS
approved