%I A001007
%S A001007 1,2,15,42,421,1331,15119,618765,2155578,98032875,1290154807,
%T A001007 4682196239,63117678751,3186252107917,164886529617695,616630679090258,
%U A001007 32763760653353135,467443761039641135,1768227793278781667
%N A001007 a(n) = ( Sum C(p,i); i=1,...,[ 2p/3 ] ) / p^2, where p = prime(n).
%Y A001007 Sequence in context: A070170 A033568 A032016 this_sequence A152015 A162256 
               A041719
%Y A001007 Adjacent sequences: A001004 A001005 A001006 this_sequence A001008 A001009 
               A001010
%K A001007 nonn
%O A001007 3,2
%A A001007 R. K. Guy (rkg(AT)cpsc.ucalgary.ca)