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

Terms

a(0) =1a(1) =2a(2) =6a(3) =18a(4) =42a(5) =54a(6) =126a(7) =162a(8) =294a(9) =342a(10) =378a(11) =486a(12) =882a(13) =1026a(14) =1134a(15) =1314a(16) =1458a(17) =1806a(18) =2058a(19) =2394a(20) =2646a(21) =3078a(22) =3402a(23) =3942a(24) =4374a(25) =5334a(26) =5418a(27) =6174a(28) =6498a(29) =7182