%I #7 Mar 05 2020 02:59:25
%S 1,4,9,18,31,33,39,56,58,94,96,103,156,239,245,253,255,257,275,277,
%T 420,610,788,790,792,1070,1665,1667,1669
%N A bisection of A136259.
%F a(n) = A136259(2*n-1). - _Jinyuan Wang_, Mar 04 2020
%Y Cf. A136259, A238092.
%K nonn,more
%O 1,2
%A _N. J. A. Sloane_, Feb 20 2014