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