1,1
R. Haas, Three-colorings of finite groups or an algebra of nonequalities, Math. Mag., 63 (1990), 211-225.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Sequence in context: A089093 A058234 A188125 * A197132 A100774 A107767
Adjacent sequences: A007685 A007686 A007687 * A007689 A007690 A007691
nonn
N. J. A. Sloane (njas(AT)research.att.com).
