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!)
A222567 Number of nX2 0..2 arrays with no more than floor(nX2/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order 2
1, 1, 5, 18, 59, 200, 820, 3014, 11364, 42748, 164652, 627034, 2399454, 9229494, 35487202, 137093302, 528389870, 2048668614, 7920616338, 30777407006, 119302534874, 464420087686, 1804371752146, 7034061387558, 27382292281570 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 2 of A222573

LINKS

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

EXAMPLE

All solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A034567 A133648 A284968 * A099449 A104630 A062809

Adjacent sequences:  A222564 A222565 A222566 * A222568 A222569 A222570

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 25 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 18 11:44 EDT 2022. Contains 353807 sequences. (Running on oeis4.)