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!)
A222605 Number of nX2 0..3 arrays with exactly floor(nX2/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..3 order 1
0, 6, 32, 520, 4556, 57072, 594544, 6958016, 77112256, 888878720, 10094914368, 116306178816, 1336001507840, 15439492158976, 178494573538304, 2069940863792128, 24032638451858432, 279564150926585856 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 2 of A222608

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A276351 A135538 A296314 * A290790 A222749 A132548

Adjacent sequences:  A222602 A222603 A222604 * A222606 A222607 A222608

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 26 2013

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 September 17 03:42 EDT 2021. Contains 347478 sequences. (Running on oeis4.)