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 A192190 #8 Mar 30 2012 18:53:00 %S A192190 0,1,1,1,2,1,3,2,1,1,4,1,1,3,2,1,3,1,1,5,2,1,4,1,2,1,4,1,5,1,3,2,1,1, %T A192190 6,2,1,2,1,1,2,1,2,1,3,1,3,6,1,1,1,2,1,1,1,2,2,3,1,5,2,1,1,4,1,2,3,1, %U A192190 1,2,1,1,2,4,1,6,1,2,7,1,1,2,3,1,1,1,1,3,2,5,3,1,2,5,2 %N A192190 Degree of A192189(n) (polynomial-like numbers) in term of number derivatives: number of A003415-iterations up to reaching 0. %C A192190 a(n) = 1 iff A192189(n) is prime. %Y A192190 Cf. A003415, A038554, A192082, A192189. %K A192190 nonn %O A192190 1,5 %A A192190 _Vladimir Shevelev_, Jun 25 2011