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!)
A254810 Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
2201616, 5237645, 12325478, 33038951, 91512698, 238103801, 434785178, 1088826673, 3089894442, 8868325562, 25015224842, 68790853067, 193737960982, 539777647627, 1550563296566, 4305193215622, 11937331297902, 32765831702614 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A254804

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..53

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

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

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A251342 A019289 A254803 * A253819 A307963 A172802

Adjacent sequences: A254807 A254808 A254809 * A254811 A254812 A254813

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 08 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 February 4 05:49 EST 2023. Contains 360046 sequences. (Running on oeis4.)