A250505 Number of (n+2)X(1+2) 0..2 arrays with nondecreasing medians of every three consecutive values in every row and column

19683, 300763, 4251528, 59776471, 729000000, 8316073576, 92959677000, 992518734375, 10209839323384, 102970461234311, 1017227998469411, 9854850385971136, 94155389995652504, 889028362923875000

Offset

1,1

Comments

Column 1 of A250507

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A250510 A250508 A250507 * A186625 A186622 A250459

Adjacent sequences: A250502 A250503 A250504 * A250506 A250507 A250508

Keyword

nonn

Author

R. H. Hardin, Nov 24 2014

Status

approved