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 A085608 #15 Jan 14 2024 12:54:03 %S A085608 5,1,2,13,3,18,4,23,25,26,5,31,6,35,36,38,7,42,8,304,47,48,9,53,54,56, %T A085608 58,60,10,63,11,453,67,69,71,73,12,76,78,79,13,82,14,86,88,89,15,93, %U A085608 94,96,682,98,16,100,102,103,105,107,17,110,18,807 %N A085608 Index of the smallest prime starting with n. %F A085608 a(n) = PrimePi(A018800(n)). - _Michel Marcus_, Oct 19 2013 %e A085608 a(4)=13 because prime[13]=41 is the smallest prime starting with 4. %Y A085608 Cf. A000720, A018800. %K A085608 easy,base,nonn %O A085608 1,1 %A A085608 _Zak Seidov_, Jul 07 2003