Numbers of the form (5^j + 7^k)/2, for j and k >= 0.

Terms

a(0) =1a(1) =3a(2) =4a(3) =6a(4) =13a(5) =16a(6) =25a(7) =27a(8) =37a(9) =63a(10) =66a(11) =87a(12) =172a(13) =174a(14) =184a(15) =234a(16) =313a(17) =316a(18) =337a(19) =484a(20) =1201a(21) =1203a(22) =1213a(23) =1263a(24) =1513a(25) =1563a(26) =1566a(27) =1587a(28) =1734a(29) =2763