a(n) is the smallest number which can be represented as the sum of n distinct positive cubes in exactly 2 ways, or -1 if no such number exists.

A374417

a(n) is the smallest number which can be represented as the sum of n distinct positive cubes in exactly 2 ways, or -1 if no such number exists.

Terms

    a(0) =-1a(1) =1729a(2) =1009a(3) =1036a(4) =1161a(5) =1504a(6) =1899a(7) =2512a(8) =3024a(9) =4355a(10) =6552a(11) =9296a(12) =11648a(13) =14392a(14) =19305a(15) =25137a(16) =30997a(17) =35757a(18) =44092a(19) =53353a(20) =64001a(21) =76168a(22) =88669a(23) =104625a(24) =122201a(25) =144153a(26) =167401a(27) =191772a(28) =216161a(29) =245952

External references