Least number x such that x^n has n digits equal to k. Case k = 1.

Terms

a(0) =1a(1) =11a(2) =58a(3) =59a(4) =171a(5) =521a(6) =391a(7) =163a(8) =1023a(9) =1271a(10) =1711a(11) =4051a(12) =1603a(13) =3679a(14) =9639a(15) =3019a(16) =13442a(17) =5469a(18) =14301a(19) =17931a(20) =24871a(21) =31857a(22) =20161a(23) =24091a(24) =33245a(25) =33259a(26) =35561a(27) =36411a(28) =30817a(29) =110343