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!)
A210007 Number of (n+1)X4 0..2 arrays containing all values 0..2 with every 2X2 subblock having two or three distinct values, and new values 0..2 introduced in row major order 1
893, 70923, 5258039, 385841179, 28267925909, 2070471867089, 151644743405597, 11106638825609387, 813462442022950735, 59578874503149148763, 4363621497207730378229, 319596378000027147845681 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A210012

LINKS

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

FORMULA

Empirical: a(n) = 75*a(n-1) -30*a(n-2) -7001*a(n-3) -18089*a(n-4) +52126*a(n-5) +91400*a(n-6) -118464*a(n-7) -92992*a(n-8) +85632*a(n-9) -13824*a(n-10)

EXAMPLE

Some solutions for n=4

..0..0..0..1....0..0..0..0....0..0..0..0....0..0..0..1....0..0..0..0

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

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

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

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

CROSSREFS

Sequence in context: A309871 A063878 A063167 * A251315 A218814 A264329

Adjacent sequences:  A210004 A210005 A210006 * A210008 A210009 A210010

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 16 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 23 07:56 EST 2022. Contains 350510 sequences. (Running on oeis4.)