a(n) = s(k), where k is the n-th number such that s(j) < s(k) for all j < k, where s = A026136. Also a(n) = 2*t(n) - 1, where t = A026138.

A026139

a(n) = s(k), where k is the n-th number such that s(j) < s(k) for all j < k, where s = A026136. Also a(n) = 2*t(n) - 1, where t = A026138.

Terms

    a(0) =1a(1) =3a(2) =7a(3) =9a(4) =15a(5) =19a(6) =21a(7) =25a(8) =27a(9) =33a(10) =39a(11) =43a(12) =45a(13) =51a(14) =55a(15) =57a(16) =61a(17) =63a(18) =69a(19) =73a(20) =75a(21) =79a(22) =81a(23) =87a(24) =93a(25) =97a(26) =99a(27) =105a(28) =111a(29) =115

External references