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 A192518 #6 Mar 30 2012 18:57:34 %S A192518 2,9,30,93,100,282,303,310,849,912,933,940,961,1010,2550,2739,2802, %T A192518 2823,2830,2886,2914,3033,3040,3110,3131,7653,8220,8409,8472,8493, %U A192518 8500,8661,8745,8773,8836,9102,9123,9130,9333,9340,9396,9410,9424,9494 %N A192518 Monotonic ordering of set S generated by these rules: if x and y are in S then (x+1)(y+1) is in S, and 2 is in S. %C A192518 See A192476. %t A192518 start = {2}; f[x_, y_] := (x + 1) (y + 1) %t A192518 b[z_] := %t A192518 Block[{w = z}, %t A192518 Select[Union[ %t A192518 Flatten[AppendTo[w, %t A192518 Table[f[w[[i]], w[[j]]], {i, 1, Length[w]}, {j, 1, i}]]]], # < %t A192518 30000 &]]; %t A192518 t = NestList[b, start, 10][[-1]] (* A192518 *) %Y A192518 Cf. A192476. %K A192518 nonn %O A192518 1,1 %A A192518 _Clark Kimberling_, Jul 03 2011