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!)
A230188 Number of 5Xn 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j) 1
0, 513, 16815, 1603431, 133265847, 11393567289, 967087903539, 82226647665621, 6988859258823513, 594060143921819223, 50495027179295395167, 4292081456142986073615, 364827090034511080822419 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 5 of A230184

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A076338 A237620 A111344 * A223651 A321565 A017681

Adjacent sequences:  A230185 A230186 A230187 * A230189 A230190 A230191

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 11 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 June 6 01:16 EDT 2020. Contains 334858 sequences. (Running on oeis4.)