Smallest number whose tenth power has at least n digits.

Terms

a(0) =1a(1) =2a(2) =2a(3) =2a(4) =3a(5) =4a(6) =4a(7) =6a(8) =7a(9) =8a(10) =10a(11) =13a(12) =16a(13) =20a(14) =26a(15) =32a(16) =40a(17) =51a(18) =64a(19) =80a(20) =100a(21) =126a(22) =159a(23) =200a(24) =252a(25) =317a(26) =399a(27) =502a(28) =631a(29) =795