Least number x such that x^n has n digits equal to k. Case k = 6.

Terms

a(0) =6a(1) =26a(2) =36a(3) =174a(4) =561a(5) =426a(6) =616a(7) =711a(8) =341a(9) =2389a(10) =2226a(11) =4968a(12) =8136a(13) =2605a(14) =10838a(15) =11396a(16) =12299a(17) =11877a(18) =6398a(19) =13862a(20) =8906a(21) =12551a(22) =43196a(23) =33104a(24) =51241a(25) =43955a(26) =52492a(27) =19718a(28) =47985a(29) =45903