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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A209533 Half the number of (n+1)X8 0..2 arrays with every 2X2 subblock having exactly two distinct clockwise edge differences 1
257, 4097, 65537, 1048577, 16777217, 268435457, 4294967297, 68719476737, 1099511627777, 17592186044417, 281474976710657, 4503599627370497, 72057594037927937, 1152921504606846977, 18446744073709551617 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A209534

LINKS

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

FORMULA

Empirical: a(n) = 16^(n+1)+1

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A070184 A054801 A173892 * A125648 A155468 A321564

Adjacent sequences:  A209530 A209531 A209532 * A209534 A209535 A209536

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 10 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 August 8 19:29 EDT 2020. Contains 336298 sequences. (Running on oeis4.)