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!)
A207577 Number of nX3 0..3 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically 1
61, 3721, 196916, 10346480, 542989615, 28493353430, 1495251731248, 78467042510200, 4117726119697653, 216086359269508078, 11339580231820687861, 595067969843345032215, 31227424258112334289354, 1638723765498248302307308 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A207582

LINKS

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

EXAMPLE

Some solutions for n=4

..1..1..1....3..1..1....2..0..3....0..0..3....2..0..1....0..1..1....1..0..2

..3..2..3....1..3..3....0..2..0....0..1..1....0..2..0....3..3..0....3..2..1

..3..0..0....3..1..3....3..1..1....2..0..2....1..2..1....3..1..1....1..0..3

..2..1..3....1..3..3....2..0..2....2..1..0....3..0..0....3..2..1....3..0..1

CROSSREFS

Sequence in context: A206792 A206962 A206572 * A209087 A207052 A207129

Adjacent sequences:  A207574 A207575 A207576 * A207578 A207579 A207580

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 19 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 October 2 23:51 EDT 2022. Contains 357230 sequences. (Running on oeis4.)