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!)
A254723 Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and the central column and the two medians of the diagonal and antidiagonal nondecreasing horizontally and vertically 1
11677, 76615, 520824, 3438279, 21750375, 138938314, 888613045, 5611704536, 35547726137, 224988752752, 1423190885465, 8996675550495, 56886752817673, 359660082585566, 2273998031761468, 14377323035637119, 90900829840219324 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A254728

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

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

CROSSREFS

Sequence in context: A223691 A254770 A254777 * A031631 A250923 A015630

Adjacent sequences:  A254720 A254721 A254722 * A254724 A254725 A254726

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 January 27 16:41 EST 2022. Contains 350611 sequences. (Running on oeis4.)