1,1

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

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

Sequence in context: A121184 A089093 A058234 this_sequence A100774 A107767 A087972

Adjacent sequences: A007685 A007686 A007687 this_sequence A007689 A007690 A007691

nonn

N. J. A. Sloane (njas(AT)research.att.com).