a(n)^6 is smallest sixth power beginning with n.

Terms

a(0) =0a(1) =1a(2) =8a(3) =18a(4) =4a(5) =9a(6) =2a(7) =3a(8) =21a(9) =46a(10) =10a(11) =7a(12) =33a(13) =49a(14) =23a(15) =5a(16) =16a(17) =11a(18) =35a(19) =24a(20) =77a(21) =36a(22) =53a(23) =115a(24) =17a(25) =37a(26) =8a(27) =55a(28) =81a(29) =12