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!)
A223051 Number of nX5 0..3 arrays with exactly floor(nX5/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order 0
20, 6918, 3760845, 3067927359, 1653232100317, 1418400034832894, 776620828154120451, 685712239235601065412, 379328869203024209340509, 340703560737717064297739304 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A223052

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A175015 A135292 A222721 * A222744 A234459 A013725

Adjacent sequences:  A223048 A223049 A223050 * A223052 A223053 A223054

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 13 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 February 25 08:33 EST 2021. Contains 341606 sequences. (Running on oeis4.)