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!)
A253758 Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock diagonal median minus antidiagonal median nondecreasing horizontally and vertically 1
2992, 23096, 164120, 1135439, 8385264, 60838168, 447022128, 3260897684, 23933092377, 175157529922, 1285172525906, 9417586233972, 69080720488227, 506445689265095, 3714389996410083, 27235730764751289, 199739317597923299 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A253764

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A346221 A253962 A253955 * A230013 A158963 A178326

Adjacent sequences:  A253755 A253756 A253757 * A253759 A253760 A253761

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 11 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 May 28 13:05 EDT 2022. Contains 354115 sequences. (Running on oeis4.)