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A153445 Take n points in general position in space; draw all planes through all triples of these points; sequence gives number of connected regions formed. 2
2, 15, 86, 634, 3956, 18549, 69065 (list; graph; refs; listen; history; text; internal format)
OFFSET
3,1
LINKS
A. Evnin, An elementary Introduction to Matroids, Mathematical Education 2 (33) (2005), 2-33
FORMULA
a(n)=1+(n^9-9n^8+6n^7+180n^6-663n^5+369n^4+3536n^3-8964n^2+2952n)/1296
CROSSREFS
Sequence in context: A328007 A098624 A116079 * A208974 A294196 A275794
KEYWORD
nonn
AUTHOR
Alexander Evnin, Dec 26 2008
STATUS
approved

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Last modified July 23 21:46 EDT 2024. Contains 374575 sequences. (Running on oeis4.)