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 A146482 #3 Mar 30 2012 17:39:45
%S A146482 8,3,9,0,4,2,1,5,4,2,7,4,4,6,8,6,0,0,7,6,8,4,6,2,1,1,1,1,9,4,5,4,1,2,
%T A146482 5,4,9,2,8,3,0,7,1,6,6,7,6,0,8,8,2,7,3,3,0,0,0
%N A146482 Decimal expansion of Product_{q in A001358} (1-1/(q*(q-1))).
%C A146482 Semiprime analog of A005596.
%H A146482 R. J. Mathar, <a href="http://arxiv.org/abs/0903.2514">Hardy-Littlewood constants embedded into infinite products over all positive integers</a>, arXiv:0903.2514 [math.NT], Table 3 third line. [From _R. J. Mathar_, Mar 28 2009]
%F A146482 The logarithm is -sum_{s>=2} sum_{j=1..floor[s/(1+r)]} binomial(s-r*j-1,j-1)*P_2(s)/j at r=1, where P_k(s) are the k-almost prime zeta functions of arXiv:0803.0900.
%e A146482 0.839042154274468600768... = (1-1/12)*(1-1/30)*(1-1/72)*(1-1/90)*(1-1/182)*..
%K A146482 nonn,cons,less
%O A146482 0,1
%A A146482 _R. J. Mathar_, Feb 13 2009