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!)
A222848 Number of nX1 0..2 arrays with no more than floor(nX1/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order 5
1, 1, 2, 10, 24, 72, 168, 664, 1632, 5376, 13152, 47968, 119936, 406400, 1017984, 3585408, 9082368, 30987264, 78761472, 272565760, 697493504, 2378450944, 6107523072, 20921604096, 53972262912, 183506403328, 474876108800 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 1 of A222853

LINKS

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

EXAMPLE

All solutions for n=3

..0....0

..1....1

..2....0

CROSSREFS

Sequence in context: A130016 A120550 A233266 * A119062 A270822 A248117

Adjacent sequences: A222845 A222846 A222847 * A222849 A222850 A222851

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 07 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 January 31 04:27 EST 2023. Contains 359947 sequences. (Running on oeis4.)