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 A100006 #13 Aug 17 2019 00:59:22
%S A100006 2,4,5,6,7,7,9,8,8,9,13,9,15,11,10,10,19,10,21,11,12,15,25,11,12,17,
%T A100006 11,13,31,12,33,12,16,21,14,12,39,23,18,13,43,14,45,17,13,27,49,13,16,
%U A100006 14,22,19,55,13,18,15,24,33,61,14,63,35,15,14,20,18,69,23,28,16,73,14,75
%N A100006 Integer log of 2n: sum of primes dividing 2n (with repetition).
%e A100006 a(20)=11 because 40=2^3*5^1 and 3*2+1*5=11.
%p A100006 with(numtheory): a:=proc(n) local b: b:=op(2,ifactors(n)): add(b[j][1]*b[j][2],j=1..nops(b)): end: seq(a(2*n),n=1..88); # _Emeric Deutsch_, Mar 10 2005
%t A100006 Table[Plus @@ Times @@@ FactorInteger[2n], {n, 100}] (* _Ray Chandler_, Nov 12 2005 *)
%Y A100006 Bisection of A001414.
%K A100006 nonn,easy
%O A100006 1,1
%A A100006 _N. J. A. Sloane_, Nov 20 2004
%E A100006 More terms from _Emeric Deutsch_, Mar 10 2005