%I #4 Jul 14 2020 23:49:07
%S 1,5,24,52,120,120,336,496,654,600,1320,1248,2184,1680,2880
%N Sum of the entries in the character table of the group GL(2,Z_n).
%F For an odd prime p : a(p) = p*(p^2-1).
%Y Cf. A000252, A062354, A053191.
%K mult,nonn,more
%O 1,2
%A Yuval Dekel (dekelyuval(AT)hotmail.com), Jul 11 2003