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!)
A207345 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 0 and 1 1 1 vertically 1
25, 625, 1704, 12292, 71344, 388134, 2367656, 13950908, 79860282, 473919476, 2786796897, 16214534579, 95457905658, 560591392760, 3278996579419, 19256876712615, 113017014575263, 662243340003005, 3886173014048250 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A207346

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A207594 A207513 A207687 * A207487 A207268 A208106

Adjacent sequences:  A207342 A207343 A207344 * A207346 A207347 A207348

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 17 2012

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 18 19:37 EST 2022. Contains 350455 sequences. (Running on oeis4.)