A262108 Number of (n+1)X(3+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.

130, 2426, 61256, 1518344, 38154616, 1127807708

Offset

1,1

Comments

Column 3 of A262109.

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for n=3
..2..0..0..2....1..0..0..0....1..0..0..1....2..2..1..0....0..2..1..0
..2..1..2..1....2..0..0..1....1..2..0..0....1..0..0..0....0..1..0..0
..0..1..1..2....2..1..1..2....1..0..0..1....2..1..0..0....1..2..0..1
..1..1..2..2....2..0..0..2....2..1..2..1....2..2..2..2....2..2..2..0

Crossrefs

Cf. A262109.

Sequence in context: A185584 A301545 A229329 * A250212 A239094 A084641

Adjacent sequences: A262105 A262106 A262107 * A262109 A262110 A262111

Keyword

nonn

Author

R. H. Hardin, Sep 11 2015

Status

approved