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 A165957 #5 Mar 30 2012 18:52:34 %S A165957 1,4,6,8,9,0,2,4,5,6,8,0,2,4,8,10,12,14,16,0,6,9,12,15,18,24,27,0,8, %T A165957 16,20,24,32,36,0,5,10,20,25,30,35,40,0,12,18,24,30,36,48,54,0,14,28, %U A165957 35,42,49,56,0,8,16,32,40,48,56,64,0,9,18,27,36,45,54,72,81,0,0,0,0,0,0,0,1,2 %N A165957 Product of the digits of the n-th nonprime. %F A165957 a(n) = A007954(A018252(n)). %Y A165957 Cf. A018252, A053666. %K A165957 nonn,base,less %O A165957 1,2 %A A165957 _Juri-Stepan Gerasimov_, Oct 01 2009 %E A165957 Entries checked, keyword:base added by _R. J. Mathar_, Oct 05 2009