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 A257070 #5 Apr 15 2015 13:31:37 %S A257070 2,3,1,3,2,4,1,3,3,4,2,1,1,3,2,4,1,3,3,3,9,2,2,1,16,1,3,3,9,4,2,1,16, %T A257070 2,1,3,4,3,3,4,1,3,2,1,1,3,2,2,2,4,1,1,16,1,1,3,4,2,1,25,2,4,2,2,1,3, %U A257070 3,4,3,25,4,1,2,3,2,2,3,36,1,9,3,1,2,1 %N A257070 Traces of primes in enhanced squares representation, cf. A256913. %C A257070 a(n) = A256914(A000040(n)). %H A257070 Reinhard Zumkeller, <a href="/A257070/b257070.txt">Table of n, a(n) for n = 1..10000</a> %o A257070 (Haskell) %o A257070 a257070 = last . a257053_row %Y A257070 Cf. A257053, A256913, A000040, A256914. %K A257070 nonn %O A257070 1,1 %A A257070 _Reinhard Zumkeller_, Apr 15 2015