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!)
A223313 Number of nX4 0..1 arrays with successive rows and columns fitting to straight lines with nondecreasing slope, with a single point array taken as having zero slope 1
16, 57, 454, 1792, 10788, 43999, 226126, 874205, 4025000, 15472252, 66378320, 251166657, 1040520624, 3937703717, 16021122364, 60678306334, 245065674186, 932218789579, 3750451651646, 14310037237132, 57374909585066 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A223317

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..27

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A221068 A187277 A316443 * A235679 A235449 A235736

Adjacent sequences:  A223310 A223311 A223312 * A223314 A223315 A223316

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 19 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 26 01:49 EDT 2021. Contains 346294 sequences. (Running on oeis4.)