This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A141552 #4 Mar 30 2012 18:52:27 %S A141552 9,12,18,16,18,24,24,24,36,36,36,32,36,48,36,42,48,48,54,72,48,54,48, %T A141552 72,60,56,72,72,72,72,72,96,64,90,72,84,108,72,96,80,90,108,96,96,144, %U A141552 84,108,108,96,120,144,114,120,120,96,126,144,144,126,144,108,132,120,144 %N A141552 Transformed products of prime factors of the composites, the largest prime and smallest prime incremented by 1. %C A141552 In the prime number decomposition of k=A002808(i), i=1,2,3,.., one instance of the largest prime, pmax=A052369(i), is replaced by pmax+1 and one instance of the smallest prime, pmin=A056608(i), is replaced by pmin+1. The product of this modified list of factors, k*(pmax+1)*(pmin+1)/(pmin*pmax), is added to the sequence. %e A141552 k(1)=4=(p(max)=2)*(p(min)=2), transformed (2+1)*(2+1)=3*3=9=a(1). %e A141552 k(2)=6=(p(max)=3)*(p(min)=2), transformed (3+1)*(2+1)=4*3=12=a(2). %e A141552 k(6)=12=(p(max)=3)*(p=2)*(p(min)=2), transformed (3+1)*2*(2+1)=4*2*3=24=a(6), etc. %Y A141552 Cf. A141218, A141219, A141220, A141284. %K A141552 nonn %O A141552 1,1 %A A141552 _Juri-Stepan Gerasimov_, Aug 14 2008 %E A141552 Edited and corrected by _R. J. Mathar_, Aug 18 2008