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A063598 Smallest k such that 6^k has exactly n 2's in its decimal representation. 0
1, 3, 12, 22, 25, 47, 44, 69, 48, 71, 66, 98, 125, 160, 129, 145, 101, 128, 154, 151, 212, 228, 217, 210, 223, 176, 226, 198, 313, 218, 316, 314, 378, 364, 326, 350, 353, 394, 344, 387, 399, 421, 376, 390, 494, 431, 449, 509, 510, 561, 501 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
MATHEMATICA
a = {}; Do[k = 1; While[ Count[ IntegerDigits[6^k], 2] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a
With[{c=6^Range[600]}, Flatten[Table[Position[c, _?(DigitCount[#, 10, 2]==n&), {1}, 1], {n, 0, 50}]]] (* Harvey P. Dale, Dec 29 2014 *)
CROSSREFS
Sequence in context: A088099 A110419 A031223 * A063107 A015629 A341374
KEYWORD
base,nonn
AUTHOR
Robert G. Wilson v, Aug 10 2001
EXTENSIONS
Name corrected by Jon E. Schoenfield, Jun 26 2018
STATUS
approved

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Last modified June 20 16:59 EDT 2024. Contains 373530 sequences. (Running on oeis4.)