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 A080502 #5 Dec 05 2013 19:56:00 %S A080502 1,10,102,1012,10120,101202,1012025 %N A080502 a(1) = 1, a(n) = smallest multiple of n that can be obtained by inserting digits anywhere in a(n-1) if necessary. %e A080502 a(4) = 1012 hence a(5)=10120 and a(6) = 101202. %Y A080502 Cf. A080501, A080503. %Y A080502 Variant of A078283. [From _R. J. Mathar_, Sep 19 2008] %K A080502 base,nonn %O A080502 1,2 %A A080502 _Amarnath Murthy_, Mar 19 2003