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: A115543 A095464 A072288 this_sequence A003847 A095466 A115555

Adjacent sequences: A003851 A003852 A003853 this_sequence A003855 A003856 A003857

nonn,easy,bref

njas