Numbers n > 1 such that 2^m == 1 (mod n^2), where m = A002326((n-1)/2).

Terms

a(0) =1093a(1) =3511a(2) =7651a(3) =10533a(4) =14209a(5) =17555a(6) =22953a(7) =31599a(8) =42627a(9) =45643a(10) =52665a(11) =99463a(12) =136929a(13) =157995a(14) =228215a(15) =298389a(16) =410787a(17) =684645a(18) =2053935a(19) =3837523a(20) =11512569a(21) =19187615a(22) =26862661a(23) =34537707a(24) =49887799a(25) =57562845a(26) =80587983a(27) =134313305a(28) =149663397a(29) =172688535