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 A052497(n)/8. - R. Stephan, Mar 30 2004

Sequence in context: A158044 A151596 A068300 this_sequence A003926 A072238 A119451

Adjacent sequences: A003789 A003790 A003791 this_sequence A003793 A003794 A003795

nonn,easy

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