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 A086861 #8 Aug 22 2017 16:52:24
%S A086861 2,2,3,3,4,5,6,6,7,8,9,10,11,11,12,13,14,14,15,16,17,18,18,19,21,21,
%T A086861 22,22,23,23,26,26,27,28,29,30,31,31,32,33,34,34,36,36,37,37,39,41,41,
%U A086861 42,42,43,43,45,46,47,48,48,49,49,50,51,53,54,54,55,57,57,59,59,60,61,62
%N A086861 Floor( p/log(p) ), where p = prime(n).
%t A086861 Table[Floor[p/Log[p]],{p,Prime[Range[80]]}] (* _Harvey P. Dale_, Aug 22 2017 *)
%o A086861 (PARI) a(n) = floor(prime(n)/log(prime(n))) \\ _Michel Marcus_, Aug 07 2013
%K A086861 nonn,easy
%O A086861 1,1
%A A086861 Yang Sok Kim (yangsokk(AT)utas.edu.au), Aug 20 2003
%E A086861 More terms from _Ray Chandler_, Aug 31 2003