Cubefree sums of two nonzero cubes.

Terms

a(0) =2a(1) =7a(2) =9a(3) =19a(4) =26a(5) =28a(6) =35a(7) =37a(8) =61a(9) =63a(10) =65a(11) =91a(12) =98a(13) =117a(14) =124a(15) =126a(16) =127a(17) =133a(18) =169a(19) =215a(20) =217a(21) =218a(22) =271a(23) =279a(24) =316a(25) =331a(26) =335a(27) =341a(28) =342a(29) =370