Numbers that are divisible by 7 and are differences between two cubes in at least one way.

Terms

a(0) =7a(1) =56a(2) =63a(3) =91a(4) =98a(5) =189a(6) =217a(7) =448a(8) =469a(9) =504a(10) =511a(11) =602a(12) =665a(13) =721a(14) =728a(15) =784a(16) =819a(17) =875a(18) =973a(19) =1141a(20) =1197a(21) =1267a(22) =1323a(23) =1330a(24) =1512a(25) =1519a(26) =1603a(27) =1701a(28) =1736a(29) =1946