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!)
A305376 Number of crossing-minimal order types of n points in the plane. 1
1, 1, 1, 1, 1, 6, 49, 1179, 55278, 4888160 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

LINKS

Table of n, a(n) for n=1..10.

Alexander Pilz and Emo Welzl, Order on order types, Discrete & Computational Geometry, 59 (No. 4, 2015), 886-922.

CROSSREFS

Cf. A006247, A305375.

Sequence in context: A286799 A245797 A046195 * A024268 A187528 A187699

Adjacent sequences:  A305373 A305374 A305375 * A305377 A305378 A305379

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jun 12 2018

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 April 10 21:21 EDT 2021. Contains 342856 sequences. (Running on oeis4.)