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%I #3 Mar 30 2012 16:49:58
%S 40,44,48,50,55,60,66,74,114,140,220,330,2020,111100,
%T 111111111111111111111111111111111111111111111111111111111111
%N a(n) = 60 written in base 15 - n.
%K nonn,fini,full
%O 0,1
%A _N. J. A. Sloane_, Jun 04 2004