Numbers of the form 7^j + 8^k, for j and k >= 0.

Terms

a(0) =2a(1) =8a(2) =9a(3) =15a(4) =50a(5) =57a(6) =65a(7) =71a(8) =113a(9) =344a(10) =351a(11) =407a(12) =513a(13) =519a(14) =561a(15) =855a(16) =2402a(17) =2409a(18) =2465a(19) =2913a(20) =4097a(21) =4103a(22) =4145a(23) =4439a(24) =6497a(25) =16808a(26) =16815a(27) =16871a(28) =17319a(29) =20903