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!)
A222930 Number of n X n 0..3 arrays with successive rows and columns fitting to straight lines with strictly increasing slope, with a single point array taken as having zero slope 0
4, 106, 10896, 26220153, 263793650432 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A222931

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A203313 A087178 A104595 * A221187 A220531 A322085

Adjacent sequences:  A222927 A222928 A222929 * A222931 A222932 A222933

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 09 2013

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 May 28 09:09 EDT 2022. Contains 354112 sequences. (Running on oeis4.)