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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A253995 Number of (3+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
11872, 71116, 477856, 3060398, 20022358, 133063670, 890259584, 5899215927, 39196387788, 260248078913, 1725703804020, 11432869318075, 75714991386512, 501055128371203, 3313759490215024, 21903446778478467, 144699405028716180 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A253993

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

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

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

CROSSREFS

Sequence in context: A251788 A194776 A253988 * A258905 A232673 A186603

Adjacent sequences:  A253992 A253993 A253994 * A253996 A253997 A253998

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 May 19 17:07 EDT 2019. Contains 323395 sequences. (Running on oeis4.)