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!)
A206755 Number of (n+1)X3 0..2 arrays with every 2X3 or 3X2 subblock having no more than three equal edges, and new values 0..2 introduced in row major order 1
106, 2187, 46860, 1002015, 21403411, 457325164, 9771502433, 208781853511, 4460929715062, 95314283208603, 2036528732366433, 43513408950473466, 929727495885160693, 19864984988374035589, 424444399488287893292 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A206761

LINKS

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

FORMULA

Empirical: a(n) = 16*a(n-1) +86*a(n-2) +577*a(n-3) +694*a(n-4) +1376*a(n-5) -823*a(n-6) +136*a(n-7) -2266*a(n-8) -461*a(n-9) -1230*a(n-10)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A184217 A184209 A233047 * A200969 A234413 A083963

Adjacent sequences:  A206752 A206753 A206754 * A206756 A206757 A206758

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 12 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 13 22:39 EDT 2022. Contains 356109 sequences. (Running on oeis4.)