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!)
A254484 Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
512, 29952, 3912576, 1018596736, 615887502592, 871411470160000, 2791393651770044928, 20834584212281010642048, 359773454516444702380773120, 14455392568428580152969089843072, 1342532863362457191125034598691859456 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A254491

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..12

EXAMPLE

Some solutions for n=2

..0..1..1..1....1..1..1..0....0..0..0..1....0..0..1..1....1..0..1..0

..1..0..0..0....1..1..0..1....1..0..1..0....0..1..0..1....0..0..0..0

..1..0..1..1....0..1..1..1....0..0..1..1....0..0..1..1....0..1..0..1

..0..0..0..0....1..1..1..0....1..1..1..1....0..1..1..1....1..1..0..1

CROSSREFS

Sequence in context: A250496 A254160 A254450 * A253864 A308815 A253536

Adjacent sequences:  A254481 A254482 A254483 * A254485 A254486 A254487

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 31 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 August 7 17:30 EDT 2022. Contains 355994 sequences. (Running on oeis4.)