Number of distinct sums i^3 + j^3 + k^3 for 1<=i<=j<=k<=n.

Terms

a(0) =1a(1) =4a(2) =10a(3) =20a(4) =35a(5) =55a(6) =83a(7) =119a(8) =164a(9) =218a(10) =280a(11) =343a(12) =431a(13) =535a(14) =648a(15) =760a(16) =903a(17) =1064a(18) =1241a(19) =1442a(20) =1659a(21) =1891a(22) =2151a(23) =2409a(24) =2714a(25) =3044a(26) =3369a(27) =3754a(28) =4160a(29) =4582