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A063588 Smallest k such that 5^k has exactly n 3's in its decimal representation. 0
1, 5, 17, 25, 32, 48, 35, 90, 84, 81, 128, 101, 140, 120, 159, 145, 179, 154, 181, 104, 224, 234, 226, 246, 261, 228, 315, 323, 316, 320, 259, 303, 359, 325, 377, 317, 369, 415, 457, 439, 476, 473, 493, 470, 513, 548, 508, 472, 529, 533, 601 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..50.

MATHEMATICA

a = {}; Do[k = 1; While[ Count[ IntegerDigits[5^k], 3] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a

CROSSREFS

Sequence in context: A106012 A230527 A242178 * A307286 A117635 A268526

Adjacent sequences:  A063585 A063586 A063587 * A063589 A063590 A063591

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 April 8 05:55 EDT 2020. Contains 333312 sequences. (Running on oeis4.)