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 A225796 #9 Jul 28 2013 16:07:23 %S A225796 1,12,456,415416,194191194192,3816727961538167279616, %T A225796 35270249819024056401913527024981902405640192 %N A225796 a(1) = 1, a(n) = least proper multiple of a(n-1) which is a concatenation of two or more successive numbers. %H A225796 Paul Tek, <a href="/A225796/b225796.txt">Table of n, a(n) for n = 1..11</a> %H A225796 Paul Tek, <a href="/A225796/a225796.gp.txt">PARI program for this sequence</a> %e A225796 12 is the least proper multiple of 1 in A035333, hence a(2)=12. %e A225796 456 is the least proper multiple of 12 in A035333, hence a(3)=456. %o A225796 (PARI) See Links section. %Y A225796 Cf. A035333, A094333. %K A225796 nonn,base %O A225796 1,2 %A A225796 _Paul Tek_, Jul 27 2013