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!)
A205766 Number of (n+1) X 7 0..3 arrays with every 2 X 2 subblock having nonzero determinant and having the same number of clockwise edge increases as its horizontal and vertical neighbors. 1
3490700, 1336717872, 545700470559, 223459321298323, 91342751431917271, 37329289868928312037, 15245666610881157061902, 6226771909851135513221100, 2542604116386266994899929934, 1038308180737975215393212045381 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A205768.
LINKS
EXAMPLE
Some solutions for 5 X 5
..2..3..2..0..1..3..3....1..0..1..2..1..3..2....0..3..0..2..2..3..1
..1..1..0..1..3..1..0....2..1..2..1..2..0..3....1..0..2..0..3..1..2
..0..2..1..3..1..0..2....0..2..3..2..3..1..0....3..1..3..2..1..3..1
..2..3..2..0..2..1..3....3..0..1..3..2..2..1....2..1..0..3..2..1..0
..2..1..3..1..3..2..1....0..2..0..2..1..3..2....1..0..1..0..3..2..1
CROSSREFS
Cf. A205768.
Sequence in context: A204335 A365888 A240105 * A183790 A256770 A106812
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 30 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 18 02:11 EDT 2024. Contains 373468 sequences. (Running on oeis4.)