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 A085275 #4 Oct 01 2013 17:57:39
%S A085275 6,9,10,12,15,15,21,20,18,21,25,28,33,27,30,39,30,35,35,34,44,51,42,
%T A085275 39,57,52,45,49,55,50,69,51,56,55,68,65,57,66,63,76,87,65,93,70,66,78,
%U A085275 77,85,92,77,75,111,80,95,88,91,85,84,123,91,102,129,116,99,95,104,115,124
%N A085275 Sum of n-th composite number and its largest prime divisor.
%e A085275 For 91=7*13 we have 91+13 = 104; for 92=2*2*23 we have 92+23 = 115.
%o A085275 (PARI) cminusp3(n) = { for(x=2,n, forstep(p=x,2,-1, if(isprime(p) & x%p==0 & isprime(x)==0, print1(x+p,","); break); ) ) }
%Y A085275 Cf. A085271, A085273.
%K A085275 easy,nonn
%O A085275 4,1
%A A085275 _Cino Hilliard_, Aug 12 2003