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A111274 Erroneous enumeration of "congruent and symmetric divisions" of n points on a circle. 0
1, 2, 3, 6, 9, 24 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

Motzkin, T. "Relations Between Hypersurface Cross Ratios and a Combinatorial Formula for Partitions of a Polygon for Permanent Preponderance and for Non-Associative Products." Bull. Amer. Math. Soc. 54, page 360, 1948.

LINKS

Table of n, a(n) for n=1..6.

L. Smiley, a(5)

CROSSREFS

See A111275 for the correct enumeration.

Sequence in context: A095064 A323144 A056353 * A133385 A002076 A286435

Adjacent sequences:  A111271 A111272 A111273 * A111275 A111276 A111277

KEYWORD

dead

EXTENSIONS

a(5)=9 is clearly a clerical error.

STATUS

approved

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Last modified April 4 21:25 EDT 2020. Contains 333238 sequences. (Running on oeis4.)