A217182 a(n) is the number of digits in the decimal representation of the smallest power of n that contains seven consecutive identical digits.
293, 1014, 293, 1948, 1170, 1658, 293, 1014, 8, 1378, 2092, 571, 1207, 3058, 293, 3045, 1866, 1203, 10, 1435, 1434, 325, 4014, 1948, 990, 1014, 1019, 2291, 11, 427, 2576, 1420, 3408, 1838, 2112, 1086, 1868, 713, 12, 1428, 2190, 1332, 1064, 2770, 1881, 917, 560
Offset: 2
Links
- V. Raman, Table of n, a(n) for n = 2..1000
Programs
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Mathematica
Table[k = 1; While[d = IntegerDigits[n^k]; ! MemberQ[Partition[Differences[d], 6, 1], {0, 0, 0, 0, 0, 0}], k++]; Length[d], {n, 2, 100}] (* T. D. Noe, Oct 03 2012 *)
Comments