2,1

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.

Sequence in context: A027605 A095430 A053852 this_sequence A003811 A086439 A086440

Adjacent sequences: A003801 A003802 A003803 this_sequence A003805 A003806 A003807

nonn,easy

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

Beginning same as A003811.