Sums of two distinct powers of 5.

Terms

a(0) =6a(1) =26a(2) =30a(3) =126a(4) =130a(5) =150a(6) =626a(7) =630a(8) =650a(9) =750a(10) =3126a(11) =3130a(12) =3150a(13) =3250a(14) =3750a(15) =15626a(16) =15630a(17) =15650a(18) =15750a(19) =16250a(20) =18750a(21) =78126a(22) =78130a(23) =78150a(24) =78250a(25) =78750a(26) =81250a(27) =93750a(28) =390626a(29) =390630