A007688 Number of 5-colorings of cyclic group of order n.

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

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• more

References

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

Links

• 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.

Extensions

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