A217183 a(n) is the number of digits in the decimal representation of the smallest power of n that contains eight consecutive identical digits.
2576, 3684, 2576, 1951, 6640, 5220, 4012, 3684, 9, 3107, 2623, 6107, 1207, 5916, 4217, 7114, 4999, 6018, 11, 3396, 6511, 3732, 6279, 1951, 990, 4237, 3877, 4676, 12, 6051, 4078, 4731, 5263, 1838, 10317, 1086, 5173, 9186, 13, 11285, 5740, 9697, 1064, 5297
Offset: 2
Links
- V. Raman, Table of n, a(n) for n = 2..100
Programs
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Mathematica
Table[k = 1; While[d = IntegerDigits[n^k]; ! MemberQ[Partition[Differences[d], 7, 1], {0, 0, 0, 0, 0, 0, 0}], k++]; Length[d], {n, 2, 10}] (* T. D. Noe, Oct 03 2012 *)
Comments