The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A200808 Number of n X 7 0..2 arrays with no average of any element and its diagonal, antidiagonal, horizontal and vertical neighbors equal to one. 0
260, 1123856, 349133136, 241586613760, 206279107863030 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A200809.
LINKS
Table of n, a(n) for n=1..5.
EXAMPLE
Some solutions for 3 X 3
..0..0..0..0..1..0..0....0..0..0..0..1..2..1....0..0..0..0..0..0..1
..0..0..0..0..0..0..2....0..0..0..1..1..0..0....0..0..0..0..2..0..1
..0..0..0..1..1..1..0....0..0..0..2..1..0..2....0..0..0..0..0..0..1
CROSSREFS
Cf. A200809.
Sequence in context: A003734 A216940 A200578 * A350084 A280325 A045026
Adjacent sequences: A200805 A200806 A200807 * A200809 A200810 A200811
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 22 2011
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 14 17:00 EDT 2024. Contains 372533 sequences. (Running on oeis4.)