Decimal part of n-th root of a(n) starts with digit 4.

Terms

a(0) =2a(1) =3a(2) =4a(3) =6a(4) =8a(5) =11a(6) =15a(7) =21a(8) =29a(9) =41a(10) =57a(11) =80a(12) =112a(13) =156a(14) =218a(15) =305a(16) =427a(17) =598a(18) =837a(19) =1172a(20) =1640a(21) =2296a(22) =3215a(23) =4500a(24) =6300a(25) =8820a(26) =12348a(27) =17287a(28) =24202a(29) =33883