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!)
A253306 Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum unequal to its neighbors horizontally, vertically, diagonally and antidiagonally 0
81, 1752, 64560, 516928, 16534784, 45899840, 2762956252, 2818822376, 415652059980, 163088180880, 58352627572340, 9240725160960, 7903320200155840, 527212884271456, 1048584505666800960 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A253314
LINKS
EXAMPLE
Some solutions for n=3
..2..2..0..0....2..0..0..0....1..1..2..1....1..1..0..0....2..0..0..2
..2..0..0..1....0..0..0..1....0..2..0..2....2..0..2..1....2..1..0..2
..1..2..0..0....1..2..0..0....1..0..2..0....1..2..0..2....0..0..2..0
..2..0..1..2....1..0..0..0....0..0..1..0....0..0..0..1....2..0..1..1
CROSSREFS
Sequence in context: A268974 A206677 A237091 * A237801 A328683 A236057
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 30 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 May 29 22:36 EDT 2024. Contains 372954 sequences. (Running on oeis4.)