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 A132161 #8 Jul 23 2013 12:59:39 %S A132161 1,16,40,62,95,187,683,15838,3644381 %N A132161 Smallest number which has multiplicative persistence n in base 16. %C A132161 See A003001 for base 10 and A125582 for base 12. a(3), a(4),...,a(8) are A064867(16), A064868(16),...,A064872(16). %K A132161 base,more,nonn %O A132161 0,2 %A A132161 _R. J. Mathar_, Nov 02 2007 %E A132161 a(8) drawn from A064872 by _Michel Marcus_, Jul 23 2013