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!)
A222516 Number of nX2 0..3 arrays with exactly floor(nX2/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order 1
0, 0, 0, 9, 0, 114, 0, 1881, 0, 33828, 0, 624019, 0, 11640594, 0, 218436985, 0, 4115818812, 0, 77807963106, 0, 1475137178140, 0, 28037418382435, 0, 534101042736588, 0, 10195012207704303, 0, 194958882346128666, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Column 2 of A222522

LINKS

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

EXAMPLE

All solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A167319 A231948 A222396 * A057403 A339488 A157309

Adjacent sequences:  A222513 A222514 A222515 * A222517 A222518 A222519

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 23 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 July 31 22:33 EDT 2021. Contains 346377 sequences. (Running on oeis4.)