Numbers k such that binomial(k, 2) divides binomial(2^k-2, 2).

Terms

a(0) =2a(1) =3a(2) =7a(3) =11a(4) =19a(5) =31a(6) =43a(7) =127a(8) =163a(9) =211a(10) =271a(11) =311a(12) =331a(13) =379a(14) =487a(15) =571a(16) =631a(17) =811a(18) =883a(19) =991a(20) =1459a(21) =1471a(22) =1747a(23) =2311a(24) =2531a(25) =2647a(26) =2791a(27) =2971a(28) =3079a(29) =3631