1,1

a(5) > 10^9. - Ryan Propper (rpropper(AT)stanford.edu), Jun 25 2005

Sigma(40) = 90 == 10 mod 40.

Sequence in context: A124707 A126368 A125816 this_sequence A056034 A039404 A043227

Adjacent sequences: A105866 A105867 A105868 this_sequence A105870 A105871 A105872

more,nonn

Shyam Sunder Gupta (guptass(AT)rediffmail.com), May 05 2005