# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a175029 Showing 1-1 of 1 %I A175029 #2 Mar 30 2012 17:26:31 %S A175029 3,4,6,12,10,18,14,24,27,30,22,36,26,42,45,48,34,54,38,60,63,66,46,72, %T A175029 75,78,81,84,58,90,62,96,99,102,105,108,74,114,117,120,82,126,86,132, %U A175029 135,138,94,144,147,150,153,156,106,162,165,168,171,174,118,180,122,186 %N A175029 a(n)=2*n if n is prime, otherwise a(n)=3*n. %t A175029 Table[If[PrimeQ[n],2*n,3*n],{n,1,200}] %Y A175029 Cf. A068519, A167480, A167482, A175027, A175028. %K A175029 nonn %O A175029 1,1 %A A175029 _Zak Seidov_, Nov 04 2009 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE