0,2

J. H. Conway, R. T. Curtis, S. P. Norton, R. A. Parker and R. A. Wilson, ATLAS of Finite Groups. Oxford Univ. Press, 1985, p. xvi.

H. S. M. Coxeter and W. O. J. Moser, Generators and Relations for Discrete Groups, 4th ed., Springer-Verlag, NY, reprinted 1984, p. 131.

Numbers so far appear to equal A053291(n)/3. - R. Stephan, Mar 30 2004

Sequence in context: A068295 A123482 A092870 this_sequence A123378 A166384 A003795

Adjacent sequences: A003785 A003786 A003787 this_sequence A003789 A003790 A003791

nonn,easy

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