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%I #6 May 17 2023 12:06:53
%S 1,7,11,15,17,19,21,23,27,29,39,41,47,49,55,57,73,75,83,93,95,101,103,
%T 107,109,113,115,117,119,123,125,127,131,137,139,143,155,161,163,165,
%U 169,171,177,183,185,191,199,203,207,211,213,217,221,225,237,241,243,255,257,259
%N a(n) is the Mersenne number exponent for A144932(n).
%o (PARI) forstep(m=1,10^6,2,n=sqrtint(2^m-1);if(2^m-1-n^2<n,print1(m,", ")))
%Y Cf. A000225, A017910, A144932.
%K nonn
%O 1,2
%A _Reikku Kulon_, Sep 25 2008
%E Edited and extended by _Max Alekseyev_, Oct 12 2009
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