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%I #2 Mar 30 2012 19:00:22
%S 1,8,18,32,45,60,84,112,135,160,198,240,273,308,360,400,442,486,532,
%T 600,672,726,782,840,900,988,1053,1120,1218,1320,1395,1472,1584,1666,
%U 1750,1836,1924,2052,2145,2240,2337,2436,2580,2728,2835,2944,3055,3168,3332
%N a(n) = n*(n-th nonprime number).
%C a(n) = A000027(n) * A018252(n).
%C Complement of A171524(n). [From _Jaroslav Krizek_, Dec 13 2009]
%e a(1)= 1*1 = 1, a(2)= 2*4 = 8, a(3)= 3*6 = 18, ...
%K nonn
%O 1,2
%A _Jaroslav Krizek_, Dec 11 2009