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A007268 Number of partition graphs on n vertices.
(Formerly M1467)
0
1, 0, 1, 2, 5, 14, 47, 186, 894, 5249, 38181, 348568 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=1..12.

D. W. DeTemple et al., Recent examples in the theory of partition graphs, Discrete Math., 113 (1993), 255-258.

CROSSREFS

Sequence in context: A327702 A317784 A096402 * A326898 A109156 A143918

Adjacent sequences:  A007265 A007266 A007267 * A007269 A007270 A007271

KEYWORD

nonn,more,hard

AUTHOR

Simon Plouffe

EXTENSIONS

a(11)-a(12) from Sean A. Irvine, Dec 04 2017

STATUS

approved

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Last modified July 4 18:38 EDT 2020. Contains 335448 sequences. (Running on oeis4.)