A268030 Number of 6Xn 0..2 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.

394, 155236, 61162984, 19177213020, 5458407864352, 1411837587469431, 339437646632621026, 76740959189961339827, 16475994752433970120239

Offset

1,1

Comments

Row 6 of A268026.

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Cf. A268026.

Sequence in context: A251256 A270843 A267965 * A278610 A278605 A278269

Adjacent sequences: A268027 A268028 A268029 * A268031 A268032 A268033

Keyword

nonn

Author

R. H. Hardin, Jan 24 2016

Status

approved