login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons 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 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A265875 Number of nX3 integer arrays with each element equal to the number of horizontal, vertical and antidiagonal neighbors less than itself. 1
5, 137, 1330, 30363, 544092, 9831410, 185555660, 3446658882, 64319089694, 1199098819080, 22364131445571, 417190960294802, 7779917972805386, 145112215710497400, 2706516080784304796, 50479139484195509572 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A265878.

LINKS

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

EXAMPLE

Some solutions for n=4

..0..1..2....0..4..0....1..4..0....2..1..1....0..4..1....0..3..1....0..0..3

..4..1..3....2..2..3....0..2..4....1..0..2....2..0..3....2..5..0....4..1..1

..0..6..0....0..6..0....3..3..0....2..2..4....2..0..3....1..5..0....2..6..0

..0..3..0....0..0..0....0..4..1....3..0..0....3..2..0....0..3..1....1..0..0

CROSSREFS

Cf. A265878.

Sequence in context: A216337 A142294 A279307 * A248523 A159546 A339566

Adjacent sequences:  A265872 A265873 A265874 * A265876 A265877 A265878

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 17 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 December 3 21:17 EST 2021. Contains 349468 sequences. (Running on oeis4.)