Difference between two positive cubes in more than one way.

Terms

a(0) =721a(1) =728a(2) =999a(3) =3367a(4) =5768a(5) =5824a(6) =5859a(7) =7992a(8) =8911a(9) =9919a(10) =10621a(11) =12663a(12) =12824a(13) =19467a(14) =19656a(15) =23877a(16) =25669a(17) =26936a(18) =26973a(19) =27937a(20) =28063a(21) =34209a(22) =35208a(23) =35929a(24) =41743a(25) =43561a(26) =46144a(27) =46592a(28) =46872a(29) =49959