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!)
A063858 Triangle T(n,k) (n >= 2, k = 0..n-2) giving number of abstract dissection types of configurations of n points in n-k dimensions. 6
1, 1, 3, 1, 5, 8, 1, 7, 27, 46, 1, 9, 71, 1063, 790, 1, 11, 156, 44956, 1434219, 37829, 1, 13, 325 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

2,3

LINKS

Table of n, a(n) for n=2..25.

L. Finschi, Homepage of Oriented Matroids

L. Finschi and K. Fukuda, Complete combinatorial generation of small point set configurations and hyperplane arrangements, pp. 97-100 in Abstracts 13th Canadian Conference on Computational Geometry (CCCG '01), Waterloo, Aug. 13-15, 2001.

EXAMPLE

1; 1,3; 1,5,8; 1,7,27,46; ...

CROSSREFS

Diagonals give A063859, A063860, A063861, A246992, A246993. Row sums give A063862.

Sequence in context: A210741 A208760 A116647 * A209831 A284367 A280328

Adjacent sequences:  A063855 A063856 A063857 * A063859 A063860 A063861

KEYWORD

nonn,tabl,nice

AUTHOR

N. J. A. Sloane, Aug 26 2001

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 February 25 21:00 EST 2020. Contains 332258 sequences. (Running on oeis4.)