Sum of the integer part of 10/3-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) =12a(12) =14a(13) =16a(14) =18a(15) =20a(16) =22a(17) =24a(18) =26a(19) =28a(20) =30a(21) =32a(22) =34a(23) =36a(24) =38a(25) =40a(26) =42a(27) =44a(28) =46a(29) =48