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!)
A253864 Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
512, 31632, 3939840, 1052857184, 633276761856, 896906647300128, 2875255935248467200, 21455396352019560697376, 370924232864752698632296192, 14893383155687607471120823056160, 1383367306744696268677387801027845376 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A253871

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..13

EXAMPLE

Some solutions for n=2

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

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

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

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

CROSSREFS

Sequence in context: A254160 A254450 A254484 * A308815 A253536 A254383

Adjacent sequences:  A253861 A253862 A253863 * A253865 A253866 A253867

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 17 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 June 30 06:00 EDT 2022. Contains 354914 sequences. (Running on oeis4.)