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!)
A251988 Number of (n+2)X(4+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 1 or 5 1
1182549, 43957515, 2351304453, 143941074215, 9220975438331, 598720936854481, 39038339681025033, 2548856771274494679, 166490920337454372853, 10876714257781843015027, 710600087055415290568237 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A251989
LINKS
EXAMPLE
Some solutions for n=1
..0..0..0..0..2..0....0..0..2..0..2..0....0..0..0..2..1..0....0..0..2..0..0..0
..0..2..0..2..0..0....0..0..2..2..2..0....0..0..2..1..1..1....2..0..2..0..0..0
..0..2..2..0..1..2....0..0..0..2..0..2....2..2..0..1..2..1....0..0..0..2..2..2
CROSSREFS
Sequence in context: A204777 A236718 A189408 * A233469 A237849 A345641
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 12 2014
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 March 29 08:13 EDT 2024. Contains 371265 sequences. (Running on oeis4.)