Numbers of the form (7^j + 9^k)/2, for j and k >= 0.

Terms

a(0) =1a(1) =4a(2) =5a(3) =8a(4) =25a(5) =29a(6) =41a(7) =44a(8) =65a(9) =172a(10) =176a(11) =212a(12) =365a(13) =368a(14) =389a(15) =536a(16) =1201a(17) =1205a(18) =1241a(19) =1565a(20) =3281a(21) =3284a(22) =3305a(23) =3452a(24) =4481a(25) =8404a(26) =8408a(27) =8444a(28) =8768a(29) =11684