Numbers k such that C(k+2,2) divides 2^(k+1) - 1.

Terms

a(0) =0a(1) =1a(2) =5a(3) =17a(4) =41a(5) =125a(6) =161a(7) =377a(8) =485a(9) =881a(10) =1457a(11) =2645a(12) =3077a(13) =3941a(14) =5417a(15) =9197a(16) =11825a(17) =14405a(18) =16757a(19) =18521a(20) =24965a(21) =26405a(22) =37337a(23) =39365a(24) =42461a(25) =71441a(26) =77657a(27) =95921a(28) =99077a(29) =113777