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 A053292(n)/4. - R. Stephan, Mar 30 2004

Sequence in context: A008701 A158043 A009767 this_sequence A046987 A127232 A166351

Adjacent sequences: A003786 A003787 A003788 this_sequence A003790 A003791 A003792

nonn,easy

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