a(n) = least k such that 1+2+...+k >= 1^3 + 2^3 + ... + n^3.

Terms

a(0) =1a(1) =4a(2) =8a(3) =14a(4) =21a(5) =30a(6) =40a(7) =51a(8) =64a(9) =78a(10) =93a(11) =110a(12) =129a(13) =148a(14) =170a(15) =192a(16) =216a(17) =242a(18) =269a(19) =297a(20) =327a(21) =358a(22) =390a(23) =424a(24) =460a(25) =496a(26) =535a(27) =574a(28) =615a(29) =658