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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A185805 Number of (n+1) X 8 0..3 arrays with every 2 X 2 subblock trace equal to some horizontal or vertical neighbor 2 X 2 subblock trace. 0
10419200, 42093682560, 75902079167968, 166089641496321408, 348593375731473172480 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A185807.

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for 3 X 8

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

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

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

CROSSREFS

Cf. A185807.

Sequence in context: A241791 A234198 A186921 * A306476 A251640 A066870

Adjacent sequences:  A185802 A185803 A185804 * A185806 A185807 A185808

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 04 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 December 5 16:13 EST 2021. Contains 349557 sequences. (Running on oeis4.)