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: A080129 A104839 A003812 this_sequence A115530 A120317 A071759

Adjacent sequences: A003802 A003803 A003804 this_sequence A003806 A003807 A003808

nonn,easy

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