Sum of two nonzero rational cubes.

Terms

a(0) =2a(1) =6a(2) =7a(3) =9a(4) =12a(5) =13a(6) =15a(7) =16a(8) =17a(9) =19a(10) =20a(11) =22a(12) =26a(13) =28a(14) =30a(15) =31a(16) =33a(17) =34a(18) =35a(19) =37a(20) =42a(21) =43a(22) =48a(23) =49a(24) =50a(25) =51a(26) =53a(27) =54a(28) =56a(29) =58