Numbers of the form q-p, where p and q are prime and q = p^0+p^1+p^2+..+p^k for some k.

Terms

a(0) =1a(1) =5a(2) =10a(3) =26a(4) =29a(5) =125a(6) =290a(7) =1090a(8) =1682a(9) =2794a(10) =3482a(11) =5942a(12) =7922a(13) =8189a(14) =10202a(15) =17162a(16) =19526a(17) =27890a(18) =29930a(19) =30928a(20) =85850a(21) =88724a(22) =131069a(23) =146690a(24) =292538a(25) =458330a(26) =491402a(27) =524285a(28) =552050a(29) =579122