The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A217183 a(n) is the number of digits in the decimal representation of the smallest power of n that contains eight consecutive identical digits. 1
 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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,1 COMMENTS Number of digits in n^k is equal to floor(1 + k*log_10(n)). LINKS V. Raman, Table of n, a(n) for n = 2..100 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 *) CROSSREFS Cf. A217163, A217173. Sequence in context: A031789 A001294 A109026 * A034415 A201510 A303400 Adjacent sequences:  A217180 A217181 A217182 * A217184 A217185 A217186 KEYWORD nonn,base AUTHOR V. Raman, Sep 27 2012 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified May 28 09:03 EDT 2022. Contains 354112 sequences. (Running on oeis4.)