Decimal part of n-th root of a(n) starts with digit 6.

Terms

a(0) =7a(1) =18a(2) =7a(3) =11a(4) =17a(5) =27a(6) =43a(7) =69a(8) =110a(9) =176a(10) =282a(11) =451a(12) =721a(13) =1153a(14) =1845a(15) =2952a(16) =4723a(17) =7556a(18) =12090a(19) =19343a(20) =30949a(21) =49518a(22) =79229a(23) =126766a(24) =202825a(25) =324519a(26) =519230a(27) =830768a(28) =1329228a(29) =2126765