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!)
A256809 Number of (n+2)X(7+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 0 or 1 and no column sum 0 or 1 1
12707, 203129, 3375943, 53254665, 845074953, 13512239171, 215464267564, 3432996430917, 54734222100688, 872697161884847, 13912483854824538, 221795217415897043, 3536009069533019771, 56372932016438815229 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A256810
LINKS
EXAMPLE
Some solutions for n=1
..1..1..0..1..1..1..1..1..1....1..1..1..1..1..1..1..0..1
..1..1..1..1..0..1..1..1..0....1..0..1..1..0..1..1..1..1
..1..1..1..1..1..1..1..0..1....1..1..0..1..1..0..1..1..1
CROSSREFS
Sequence in context: A083602 A105655 A124411 * A205939 A278585 A288355
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 10 2015
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 26 15:05 EDT 2024. Contains 372826 sequences. (Running on oeis4.)