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: A096536 A104331 A003850 this_sequence A093047 A093046 A127955

Adjacent sequences: A003840 A003841 A003842 this_sequence A003844 A003845 A003846

nonn,easy

njas