|
%I #14 Jun 10 2016 10:11:47
%S 60,108,108,168,180,192,180,216,156,288,324,240,300,384,192,288,360,
%T 480,288,504,300,480,432,384,336
%N Maximal index of a torsion-free congruence subgroup of PSL(2,Z) of genus n.
%H C. J. Cummins and S. Pauli, <a href="https://www.emis.de/journals/EM/expmath/volumes/12/12.2/pp243_255.pdf">Congruence Subgroups of PSL(2,Z) of Genus Less than or Equal to 24</a>, Experiment. Math. Volume 12, Issue 2 (2003), 243-255. See Table 1.
%Y A258691, A102474, A258693-A258700 give the ten sequences in Table 1 of Cummins and Pauli (2003).
%K nonn,more
%O 0,1
%A _N. J. A. Sloane_, Jun 07 2015
|
