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!)
A222746 Number of nX7 0..3 arrays with exactly floor(nX7/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order 1
70, 1710608, 20825891902, 294955698998860, 3555678098386103283, 53383470246573011524686, 654193205170812775084974847, 10103355634312544389080282332563, 125051109525561104506969445492198468 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A222747

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..12

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A172759 A172829 A228521 * A066789 A103165 A116276

Adjacent sequences:  A222743 A222744 A222745 * A222747 A222748 A222749

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 04 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 January 28 04:30 EST 2022. Contains 350654 sequences. (Running on oeis4.)