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 A185665 #6 Jul 02 2017 12:20:31 %S A185665 31,1699,1699,901997,24839599,403445719,2668745609 %N A185665 Final prime of first member of A019518 that is divisible by 17^n. %e A185665 235711131719232931 is divisible by 17. %Y A185665 Cf. A183194, A185656, and those following. %K A185665 nonn,base,more %O A185665 1,1 %A A185665 _James G. Merickel_, Feb 01 2011