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%I
%S 20,30,50,70,110,130,170,190,230,290,310,370,410,430,470,530,590,610,
%T 670,710,730,790,830,890,970,1010,1030,1070,1090,1130,1270,1310,1370,
%U 1390,1490,1510,1570,1630,1670,1730,1790,1810,1910,1930,1970,1990,2110,2230,2270
%N a(n) = 10*prime(n).
%K nonn
%O 1,1
%A _N. J. A. Sloane_, Nov 09 2008
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