login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A254556 Number of (4+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
47140, 128366, 380406, 1193965, 3638432, 11160591, 32790229, 92202169, 251677983, 676917833, 1814981434, 4893689293, 13297063017, 36436208384, 100511846076, 278663820410, 775259097470, 2161355734557, 6034365782435 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A254553

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

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

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

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

CROSSREFS

Sequence in context: A206252 A212842 A254549 * A254479 A227710 A215840

Adjacent sequences: A254553 A254554 A254555 * A254557 A254558 A254559

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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 3 20:52 EST 2022. Contains 358543 sequences. (Running on oeis4.)