a(n)^7 is smallest seventh power beginning with n.

Terms

a(0) =0a(1) =1a(2) =3a(3) =12a(4) =9a(5) =34a(6) =13a(7) =5a(8) =7a(9) =37a(10) =10a(11) =38a(12) =2a(13) =28a(14) =76a(15) =55a(16) =4a(17) =15a(18) =21a(19) =11a(20) =8a(21) =3a(22) =58a(23) =42a(24) =22a(25) =114a(26) =16a(27) =6a(28) =116a(29) =84