A217184 a(n) is the number of digits in the decimal representation of the smallest power of n that contains nine consecutive identical digits.
12790, 10875, 12790, 1955, 21569, 28595, 12790, 21066, 10, 9834, 12334, 18560, 18967, 13242, 12791, 18446, 7264, 35928, 12, 3822, 22467, 19223, 6279, 1955, 39245, 10875, 5231, 15110, 14, 6051, 12790, 13758, 36733, 4545, 21569, 17913, 20964, 9186, 15, 23833
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], 8, 1], {0, 0, 0, 0, 0, 0, 0, 0}], k++]; Length[d], {n, 2, 10}] (* T. D. Noe, Oct 03 2012 *)
Comments