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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A253998 Number of (6+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal median plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
914112, 11055001, 175815629, 2421183428, 36681094867, 592324411676, 9417047685594, 148847562004630, 2395493172677595, 38596482561113559, 620344636127699782, 9996056173802222627, 161265688229200688374 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A253993

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..58

EXAMPLE

Some solutions for n=1

..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A112688 A273356 A253991 * A258908 A259012 A259005

Adjacent sequences:  A253995 A253996 A253997 * A253999 A254000 A254001

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 21 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 April 21 06:42 EDT 2019. Contains 322310 sequences. (Running on oeis4.)