login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A254735 Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column minus the sum of the minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically 0
512, 19782, 1209260, 100974022, 14206747097, 3580969060985, 1584367864267499, 1238770716720377150, 1737410697343829018105, 4366981834520922382623437 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A254743

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=2

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

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

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

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

CROSSREFS

Sequence in context: A056586 A096962 A231308 * A254914 A186831 A236215

Adjacent sequences:  A254732 A254733 A254734 * A254736 A254737 A254738

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 06 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 18 07:22 EST 2019. Contains 329252 sequences. (Running on oeis4.)