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 A224703 #11 Apr 23 2013 11:14:29 %S A224703 2,4,12,16,18,24,30,40,42,56,66,78,80,88,96,102,104,114,120,136,138, %T A224703 144,152,174,180,184,186,200,216,222,232,240,246,248,256,258,270,280, %U A224703 282,296,300,318,324,328,336,344,354,360,366,376,384,402,420,424,426 %N A224703 Numbers divisible by the twice the number of their prime factors (counted with multiplicity), or numbers n divisible by 2*Omega(n). %C A224703 A number is in the list if mod(n,2*A001222(n)) == 0. %H A224703 Christian N. K. Anderson, <a href="/A224703/b224703.txt">Table of n, a(n) for n = 1..10000</a> %e A224703 18 has 3 prime factors {2,3,3} and is divisible by 6=2*3; 184 has 4 prime factors {2,2,2,23} and is divisible by 8=2*4. %t A224703 Select[Range[2, 426], Mod[#, 2*PrimeOmega[#]] == 0 &] (* _T. D. Noe_, Apr 17 2013 *) %o A224703 (R) y=c(); i=2; isint<-function(x) x==as.integer(x) %o A224703 while(length(y)<10000) {if(isint(i/(2*length(factorize(i))))) y=c(y,i); i=i+1 } %Y A224703 Cf. A001222, A074946, A137230. %K A224703 nonn %O A224703 1,1 %A A224703 _Kevin L. Schwartz_ and _Christian N. K. Anderson_, Apr 16 2013