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

Terms

a(0) =2a(1) =6a(2) =8a(3) =12a(4) =26a(5) =32a(6) =50a(7) =54a(8) =74a(9) =126a(10) =132a(11) =174a(12) =344a(13) =348a(14) =368a(15) =468a(16) =626a(17) =632a(18) =674a(19) =968a(20) =2402a(21) =2406a(22) =2426a(23) =2526a(24) =3026a(25) =3126a(26) =3132a(27) =3174a(28) =3468a(29) =5526