Numbers the sum of whose even divisors is 2 times a prime.

Terms

a(0) =4a(1) =8a(2) =18a(3) =32a(4) =50a(5) =128a(6) =578a(7) =1458a(8) =3362a(9) =4802a(10) =6962a(11) =8192a(12) =10082a(13) =15842a(14) =20402a(15) =31250a(16) =34322a(17) =55778a(18) =57122a(19) =59858a(20) =131072a(21) =167042a(22) =171698a(23) =293378a(24) =524288a(25) =559682a(26) =916658a(27) =982802a(28) =1062882a(29) =1104098