login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A254558 Number of (6+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
586508, 1412248, 3475823, 9912158, 22791266, 64180262, 174169154, 449672470, 1181178372, 3178180769, 8577622338, 23374338451, 63619374492, 172838948499, 469793624214, 1279801193242, 3487993255848, 9516902005493, 25974718805164 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A254553

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A050518 A249610 A254551 * A254481 A183968 A104962

Adjacent sequences:  A254555 A254556 A254557 * A254559 A254560 A254561

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 01 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 August 3 14:40 EDT 2021. Contains 346438 sequences. (Running on oeis4.)