Numbers h such that 2^phi(h) == phi(h) (mod h).

Terms

a(0) =1a(1) =12a(2) =40a(3) =48a(4) =60a(5) =192a(6) =544a(7) =640a(8) =680a(9) =704a(10) =768a(11) =816a(12) =960a(13) =1020a(14) =1664a(15) =3072a(16) =10240a(17) =11008a(18) =12288a(19) =13760a(20) =15360a(21) =19456a(22) =24320a(23) =49152a(24) =83968a(25) =125952a(26) =131584a(27) =139264a(28) =139808a(29) =163840