2 together with primes multiplied by 2.

Terms

a(0) =2a(1) =4a(2) =6a(3) =10a(4) =14a(5) =22a(6) =26a(7) =34a(8) =38a(9) =46a(10) =58a(11) =62a(12) =74a(13) =82a(14) =86a(15) =94a(16) =106a(17) =118a(18) =122a(19) =134a(20) =142a(21) =146a(22) =158a(23) =166a(24) =178a(25) =194a(26) =202a(27) =206a(28) =214a(29) =218