A250507 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with nondecreasing medians of every three consecutive values in every row and column

19683, 300763, 300763, 4251528, 9777655, 4251528, 59776471, 289735900, 289735900, 59776471, 729000000, 8566581775, 17751271450, 8566581775, 729000000, 8316073576, 211068335312, 1088029714752, 1088029714752

Offset

1,1

Comments

Table starts

.......19683........300763........4251528........59776471......729000000

......300763.......9777655......289735900......8566581775...211068335312

.....4251528.....289735900....17751271450...1088029714752.53509194753023

....59776471....8566581775..1088029714752.138575157528960

...729000000..211068335312.53509194753023

..8316073576.4788105206370

.92959677000

Links

R. H. Hardin, Table of n, a(n) for n = 1..31

Example

Some solutions for n=1 k=4
..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
..1..0..2..1..0..2....1..1..1..1..0..1....0..2..0..0..0..1....0..2..1..0..1..2
..0..2..0..2..2..0....0..1..2..1..1..0....0..1..1..1..0..1....1..2..1..1..2..0

Crossrefs

Sequence in context: A067489 A250510 A250508 * A250505 A186625 A186622

Adjacent sequences: A250504 A250505 A250506 * A250508 A250509 A250510

Keyword

nonn,tabl

Author

R. H. Hardin, Nov 24 2014

Status

approved