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A001325 Number of equivalence classes of 3-valued Post functions of n variables under action of semi-direct product of symmetric group S_n and complementing group D(n,3).
(Formerly M5065 N2193)
0
18, 2862, 158942078604, 1154756479802000759397882239648671476, 22705636064052332865341424631734575964031184548599980511689123743695605536329597356626173372044993289352573124700 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

M. A. Harrison and R. G. High, On the cycle index of a product of permutation groups, J. Combin. Theory, 4 (1968), 277-299.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

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..5.

CROSSREFS

Sequence in context: A267065 A243215 A162449 * A263589 A008994 A036214

Adjacent sequences:  A001322 A001323 A001324 * A001326 A001327 A001328

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

Definition improved and more terms from Sean A. Irvine, Oct 01 2015

STATUS

approved

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Last modified June 25 06:06 EDT 2016. Contains 274195 sequences.