a(n) = 2^n mod 139.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =32a(6) =64a(7) =128a(8) =117a(9) =95a(10) =51a(11) =102a(12) =65a(13) =130a(14) =121a(15) =103a(16) =67a(17) =134a(18) =129a(19) =119a(20) =99a(21) =59a(22) =118a(23) =97a(24) =55a(25) =110a(26) =81a(27) =23a(28) =46a(29) =92