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A128819 Dimensions in which the simplex has two intermediate skeletons with the same centroid. 0
13, 21, 29, 31, 40, 43, 51, 53, 57, 65 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

"There are infinitely many dimensions in which this phenomenon occurs.... They are quite sparse -- sparser than the prime integers.... It is impossible in any dimension for there to be three intermediate skeletons with the same centroid" [Krantz, p. 13].

LINKS

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

Steven G. Krantz, Higher dimensional conundra, 8 Apr 2007, table and formula on p. 13, arXiv:0704.1041

CROSSREFS

Sequence in context: A304948 A087683 A195375 * A165955 A331116 A050711

Adjacent sequences:  A128816 A128817 A128818 * A128820 A128821 A128822

KEYWORD

nonn

AUTHOR

Jonathan Vos Post, Apr 10 2007

STATUS

approved

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Last modified May 28 00:30 EDT 2022. Contains 354110 sequences. (Running on oeis4.)