%I #14 Oct 19 2017 10:49:52
%S 9,25,91,119,201,295,527,891,1133,1341,1671,2479,2973,4299,5593,8469,
%T 9553,15691,16145,19621,25481,28233,31423,31909,34073,35619,43337,
%U 44295,89695,107381,134519,155943,173363,175143,188037,212705,265629
%N a(n) = smallest composite (odd) number greater than a(n-1) such that a(n)+2n is the first prime after a(n).
%C More precise definition from _Don Reble_, Jul 29 2014. (Old definition was: Smallest composite odd number of first sequence of n consecutive composite odd numbers.)
%H Vincenzo Librandi, <a href="/A189118/b189118.txt">Table of n, a(n) for n = 1..70</a>
%e 9 is composite but 11 is not; 25 and 27 are composite but 29 is not; 91, 93, 95 are composite but 97 is not.
%t imax=1000000;lst={};q=1;Do[k=0;Do[If[PrimeQ[n],Break[],k++],{n,m,imax+200,2}];If[k==q,q++;AppendTo[lst,m]],{m,5,imax,2}];lst
%Y Cf. A002808, A071904, A161945, A075067.
%K nonn
%O 1,1
%A _Vladimir Joseph Stephan Orlovsky_, Apr 16 2011
%E Definition revised by _N. J. A. Sloane_, Jul 29 2014 at the suggestion of _Don Reble_.