login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A204974 Number of nX4 0..2 arrays with no occurrence of three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..2 introduced in row major order 1
11, 726, 16813, 451468, 11815256, 311275169, 8202482914, 216132492162, 5694910498914, 150054777556991, 3953775892498008, 104177764014536592, 2744972159153714019, 72327078831355250520, 1905740996306739704109 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A204978

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Sequence in context: A301732 A028457 A222653 * A204701 A267954 A206646

Adjacent sequences:  A204971 A204972 A204973 * A204975 A204976 A204977

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 21 2012

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 14 03:14 EDT 2022. Contains 356109 sequences. (Running on oeis4.)