Smallest number whose sixth power has n digits.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =7a(6) =10a(7) =15a(8) =22a(9) =32a(10) =47a(11) =69a(12) =100a(13) =147a(14) =216a(15) =317a(16) =465a(17) =682a(18) =1000a(19) =1468a(20) =2155a(21) =3163a(22) =4642a(23) =6813a(24) =10000a(25) =14678a(26) =21545a(27) =31623a(28) =46416a(29) =68130