login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A186926 Maximal number of isosceles right triangles in a set of n points in the plane. 0

%I

%S 1,4,8,11,15,20,28,35,43,52,64,74,85,97,112,124,139,156,176,192,210,

%T 229,252

%N Maximal number of isosceles right triangles in a set of n points in the plane.

%C The values for n >= 10 are only conjectural.

%H Bernardo M. Abrego, Silvia Fernandez-Merchant, David B. Roberts, <a href="http://arxiv.org/abs/1102.5347">On the maximum number of isosceles right triangles in a finite point set</a>, arXiv:1102.5347 [math.CO], 2011.

%H P. Erdős and G. Purdy, <a href="https://doi.org/10.1016/0097-3165(71)90028-8">Some extremal problems in geometry</a>, Journal of Combinatorial Theory 10 (1971), 246-252.

%H P. Erdős and G. Purdy, <a href="https://users.renyi.hu/~p_erdos/1975-40.pdf">Some extremal problems in geometry III</a>, Proc. 6th Southeastern Conference in Combinatorics, Graph Theory and Comp. (Florida Atlantic Univ., Boca Raton, Fla., 1975), pp. 291-308. Congressus Numerantium, No. XIV, Utilitas Math., Winnipeg, Man., 1975.

%H P. Erdős and G. Purdy, <a href="https://users.renyi.hu/~p_erdos/1976-43.pdf">Some extremal problems in geometry IV.</a>, Proc. 7th Southeastern Conference in Combinatorics, Graph Theory and Comp. (Louisiana State Univ., Baton Rouge, La., 1976), pp. 3.

%K nonn,hard

%O 3,2

%A _Jonathan Vos Post_, Mar 01 2011

%E Edited by _N. J. A. Sloane_, Mar 04 2011

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 November 13 00:25 EST 2019. Contains 329083 sequences. (Running on oeis4.)