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)

18, 2862, 158942078604, 1154756479802000759397882239648671476, 22705636064052332865341424631734575964031184548599980511689123743695605536329597356626173372044993289352573124700

Offset

1,1

References

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.

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

Crossrefs

Sequence in context: A243215 A162449 A318297 * A263589 A008994 A346209

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