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A086147
Sum of the orders of the elements in the group GL(2,Z_n).
1
1, 13, 219, 367, 4891, 1977, 36085, 9791, 46731, 39133, 479157, 37119, 1289911, 243703, 375219, 305599, 6991319, 299913, 11500123, 667219, 2610657, 3723423, 40035651, 781127, 14928331, 8544673, 11297307, 4540153, 129539703, 2739477, 209881105, 9748415
OFFSET
1,2
LINKS
FORMULA
a(n) = Sum_{k=1..n} k*A316566(n, k). - Andrew Howroyd, Jul 07 2018
PROG
(GAP) A086147 := n -> Sum(ConjugacyClasses(GL(2, ZmodnZ(n))), cc->Size(cc) * Order(Representative(cc))); # Eric M. Schmidt, May 18 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Yuval Dekel (dekelyuval(AT)hotmail.com), Aug 25 2003
EXTENSIONS
Corrected and extended by Eric M. Schmidt, May 18 2013
STATUS
approved