a(n) is the least value of k such that the decimal expansion of n^k contains eight or more consecutive identical digits.
A217163
a(n) is the least value of k such that the decimal expansion of n^k contains eight or more consecutive identical digits.
Terms
- a(0) =8554a(1) =7720a(2) =4277a(3) =2790a(4) =8533a(5) =6176a(6) =4442a(7) =3860a(8) =8a(9) =2983a(10) =2430a(11) =5482a(12) =1053a(13) =5030a(14) =3502a(15) =5781a(16) =3982a(17) =4706a(18) =8a(19) =2568a(20) =4850a(21) =2740a(22) =4549a(23) =1395a(24) =699a(25) =2960a(26) =2679a(27) =3197a(28) =8a(29) =4057
External references
- oeis: A217163