1,3
P. Cvitanovic, Group Theory, Princeton, 2008; see Eq. (21.1).
Table of n, a(n) for n=1..19.
Sequence in context: A061978 A031886 A147458 * A287057 A048780 A009864
Adjacent sequences: A169924 A169925 A169926 * A169928 A169929 A169930
nonn,fini,full
N. J. A. Sloane, Jul 20 2010
approved