Least k such that 2^(2^k) = n (mod k).

Terms

a(0) =1a(1) =3a(2) =14a(3) =11a(4) =6a(5) =1941491a(6) =10a(7) =83a(8) =31a(9) =13a(10) =123a(11) =35a(12) =71a(13) =27a(14) =34913a(15) =241a(16) =18a(17) =8059a(18) =34a(19) =349a(20) =44a(21) =25a(22) =39a(23) =100867561a(24) =76a(25) =231a(26) =253a(27) =66203a(28) =57a(29) =227