Least number of positive cubes needed to sum to n.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =1a(8) =2a(9) =3a(10) =4a(11) =5a(12) =6a(13) =7a(14) =8a(15) =2a(16) =3a(17) =4a(18) =5a(19) =6a(20) =7a(21) =8a(22) =9a(23) =3a(24) =4a(25) =5a(26) =1a(27) =2a(28) =3a(29) =4