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 A105430 #9 Jul 12 2015 12:41:25
%S A105430 3,61,175,571,2414,4142,9011,359772,86249511,535238681,124396878308,
%T A105430 803878693421,6126660122361,13506262793047,74039726260531,
%U A105430 76729882123723031,655537561065645251,882122044899263311
%N A105430 Numbers n such that reciprocal of n contains the reverse of n as a string of digits to the immediate right of the decimal point (excluding leading zeros).
%C A105430 n for which 10^(2k-1)-n < n*reverse(n) <= 10^(2k-1), where k is the length of n. - _Max Alekseyev_, Apr 11 2005
%e A105430 a(3)=175 because 1/175 = 0.005714285...
%t A105430 fQ[n_] := Block[{lg = Floor[ Log[10, n] + 1]}, IntegerDigits[n] == Reverse[ Take[ RealDigits[1/n, 10, 24][[1]], lg]]]; lst = {}; Do[ If[ fQ[n], AppendTo[lst, n]], {n, 2, 10^7}]; lst (* _Robert G. Wilson v_, Apr 09 2005 *)
%Y A105430 Cf. A074841, A105429.
%K A105430 nonn,base
%O A105430 1,1
%A A105430 Gil Broussar (kikiriki(AT)mindspring.com), Apr 08 2005
%E A105430 More terms from _Max Alekseyev_, Apr 11 2005
%E A105430 Further terms from _Max Alekseyev_, Apr 29 2005