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A183603 T(n,k)=1/6 the number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock containing all three values 9
6, 27, 27, 120, 204, 120, 534, 1479, 1479, 534, 2376, 10797, 17174, 10797, 2376, 10572, 78729, 201770, 201770, 78729, 10572, 47040, 574185, 2366412, 3831324, 2366412, 574185, 47040, 209304, 4187499, 27768032, 72592860, 72592860, 27768032, 4187499 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.......6.........27..........120.............534..............2376

......27........204.........1479...........10797.............78729

.....120.......1479........17174..........201770...........2366412

.....534......10797.......201770.........3831324..........72592860

....2376......78729......2366412........72592860........2220901926

...10572.....574185.....27768032......1376627608.......68026656422

...47040....4187499....325834456.....26108240340.....2083981368760

..209304...30539367...3823553752....495215814566....63854542807704

..931296..222722937..44868561272...9393691937690..1956721189681174

.4143792.1624313781.526526214848.178194216929170.59964037003007332

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..179

EXAMPLE

Some solutions with a(1,1)=0 for 4X3

..0..1..0....0..0..1....0..2..0....0..1..1....0..1..0....0..1..0....0..0..0

..2..2..0....1..2..1....0..1..0....2..0..2....2..2..1....1..2..1....1..2..1

..1..0..1....2..0..2....1..2..0....1..1..2....1..0..2....0..2..0....1..0..0

..2..2..1....1..1..0....0..2..1....2..0..1....2..2..1....2..1..1....0..2..1

CROSSREFS

Column 1 is 3*A021001(n-1)

Sequence in context: A179162 A285806 A292384 * A067876 A309337 A174226

Adjacent sequences:  A183600 A183601 A183602 * A183604 A183605 A183606

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 05 2011

STATUS

approved

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Last modified June 22 21:29 EDT 2021. Contains 345393 sequences. (Running on oeis4.)