A007688 Number of 5-colorings of cyclic group of order n. (Formerly M3514)

4, 16, 52, 144, 420, 816, 1732, 3508, 7060, 18640

Offset

1,1

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..10.

R. Haas, Three-colorings of finite groups or an algebra of nonequalities, Math. Mag., 63 (1990), 211-225.

R. Haas, Letter to N. J. A. Sloane, Aug. 1994

Crossrefs

Cf. A007687.

Sequence in context: A316321 A058234 A188125 * A320237 A197132 A266943

Adjacent sequences: A007685 A007686 A007687 * A007689 A007690 A007691

Keyword

nonn,more

Author

N. J. A. Sloane

Extensions

a(6)-a(10) from Andrey Zabolotskiy, Jul 12 2017

Status

approved