login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A185891 T(n,k)=1/729 the number of (n+2)X(k+2) 0..2 arrays with no 3X3 subblock trace equal to any horizontal or vertical neighbor 3X3 subblock trace 10
27, 588, 588, 12900, 28086, 12900, 282672, 1367896, 1367896, 282672, 6195480, 66642628, 151319356, 66642628, 6195480, 135783240, 3246601822, 16772497838, 16772497838, 3246601822, 135783240, 2975926392, 158165462152, 1859643383374 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

..........27.............588...............12900..................282672

.........588...........28086.............1367896................66642628

.......12900.........1367896...........151319356.............16772497838

......282672........66642628.........16772497838...........4223442979220

.....6195480......3246601822.......1859643383374........1060306245936410

...135783240....158165462152.....206151739863904......266120814001133510

..2975926392...7705358302364...22854468047098854....66791286531734378864

.65222436072.375382835991994.2533647121080969994.16763506421271197917026

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..84

EXAMPLE

Some solutions for 5X4

..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0

..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0

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

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

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

CROSSREFS

Sequence in context: A061914 A076008 A232944 * A185883 A212670 A099753

Adjacent sequences:  A185888 A185889 A185890 * A185892 A185893 A185894

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Feb 05 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 30 03:54 EDT 2020. Contains 337434 sequences. (Running on oeis4.)