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A063599 Smallest k such that 6^k has exactly n 3's in its decimal representation. 0
1, 2, 12, 22, 30, 24, 40, 61, 56, 84, 87, 93, 115, 114, 118, 170, 139, 129, 180, 165, 206, 197, 209, 172, 263, 258, 227, 293, 303, 327, 283, 331, 299, 329, 315, 342, 353, 346, 426, 439, 424, 448, 464, 412, 472, 435, 437, 512, 463, 498, 502 (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[6^k], 3] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a

With[{p6=6^Range[600]}, Flatten[IntegerExponent[#, 6]&/@Table[Select[ p6, DigitCount[#, 10, 3]==n&, 1], {n, 0, 50}]]] (* Harvey P. Dale, May 21 2012 *)

CROSSREFS

Sequence in context: A225188 A193828 A191226 * A163479 A017293 A244188

Adjacent sequences:  A063596 A063597 A063598 * A063600 A063601 A063602

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 September 20 20:12 EDT 2019. Contains 327247 sequences. (Running on oeis4.)