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 A085809 #12 Dec 15 2017 17:36:29
%S A085809 1,2,4,6,10,34,186,422,760,1765,4112,4585,8112,8650,8861,75150,223993,
%T A085809 327048,712605,1135940,23958638,42367759,47848742,54626559,121984495,
%U A085809 157877985,413509327,798321315,983679985,1277946119,2403158480
%N A085809 Indices of semiprimes where largest gap occurs. Or, positions of records in A065516.
%C A085809 A215231(n) = A065516(a(n)). - _Reinhard Zumkeller_, Mar 23 2014
%o A085809 (PARI) {sgr(m)=local(a,b,rec,c); c=0; a=0; b=4; rec=0; for(n=5,m,if(bigomega(n)==2,c++; a=n; if(a-b>rec,rec=a-b; print1(c","); b=a,b=a; )))}
%o A085809 (Haskell)
%o A085809 a085809 n = a085809_list !! (n-1)
%o A085809 -- See A215231 for definition of a085809_list.
%o A085809 -- _Reinhard Zumkeller_, Mar 23 2014
%Y A085809 Cf. A239674.
%K A085809 nonn
%O A085809 1,2
%A A085809 _Jason Earls_, Jul 24 2003
%E A085809 a(19)-a(26) from _Donovan Johnson_, Jan 28 2009
%E A085809 a(27)-a(31) from _Donovan Johnson_, Apr 14 2010