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!)
A222682 Number of 4Xn 0..3 arrays with no more than floor(4Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order 0
15, 18, 130, 527, 5374, 58167, 687222, 11377192, 157746714, 2877417604, 41716355254, 762816679067, 11260740512076, 204256746622744, 3052246394940308 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A222679

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A290015 A274979 A083823 * A220787 A167322 A217406

Adjacent sequences:  A222679 A222680 A222681 * A222683 A222684 A222685

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 28 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 20 07:41 EST 2020. Contains 332069 sequences. (Running on oeis4.)