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 A134331 #2 Mar 31 2012 13:21:04 %S A134331 0,4,6,8,10,12,14,12,12,18,22,19,26,22,19,16,34,22,38,22,23,32,46,23, %T A134331 20,36,18,26,58,37,62,20,34,46,29,29,74,50,38,31,82,38,86,36,30,58,94, %U A134331 30,28,32,46,40,106,30,37,37,50,70,118,41,122,74,36,24,41,48,134,50,58,50 %N A134331 Sum of prime factors (counted with multiplicity) of the period numbers defined by A133900. %e A134331 a(6)=12, since A133900(6)=72=2*2*2*3*3 and 2+2+2+3+3=12. %e A134331 a(12)=19, since A133900(12)=864=2*2*2*2*2*3*3*3 and 2+2+2+2+2+3+3+3=19. %Y A134331 Cf. A000040, A100118, A046363, A133620, A133621, A133623, A133630, A133635. %Y A134331 Cf. A133872, A133880, A133890, A133900, A133910, A133911. %K A134331 nonn %O A134331 1,2 %A A134331 _Hieronymus Fischer_, Oct 20 2007