Sum of the integer part of 11/3-th roots of integers less than n.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =7a(8) =8a(9) =9a(10) =10a(11) =11a(12) =12a(13) =14a(14) =16a(15) =18a(16) =20a(17) =22a(18) =24a(19) =26a(20) =28a(21) =30a(22) =32a(23) =34a(24) =36a(25) =38a(26) =40a(27) =42a(28) =44a(29) =46