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%I #6 Mar 30 2012 16:47:03
%S 1,15,43,371,1321,11979
%N Number of subgroups of index n in fundamental group of a certain fiber space.
%D V. A. Liskovets and A. Mednykh, Enumeration of subgroups in the fundamental groups of orientable circle bundles over surfaces, Commun. in Algebra, 28, No. 4 (2000), 1717-1738.
%K nonn
%O 1,2
%A _N. J. A. Sloane_.
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