Smallest even number divisible by 2n which is nontotient, i.e., in A005277.

Terms

a(0) =14a(1) =68a(2) =90a(3) =152a(4) =50a(5) =516a(6) =14a(7) =304a(8) =90a(9) =340a(10) =154a(11) =4008a(12) =26a(13) =308a(14) =90a(15) =608a(16) =34a(17) =2412a(18) =38a(19) =680a(20) =714a(21) =308a(22) =230a(23) =10128a(24) =50a(25) =364a(26) =594a(27) =728a(28) =174a(29) =8340