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A063600 Smallest k such that 6^k has exactly n 4's in its decimal representation. 0
1, 6, 14, 15, 47, 31, 28, 44, 70, 49, 74, 93, 124, 128, 126, 130, 116, 156, 125, 175, 228, 207, 214, 201, 174, 264, 230, 241, 238, 266, 211, 370, 368, 279, 288, 305, 358, 366, 401, 385, 416, 387, 461, 466, 475, 429, 456, 428, 471, 470, 494 (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], 4] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a

CROSSREFS

Sequence in context: A081535 A325698 A218005 * A116926 A140330 A242832

Adjacent sequences:  A063597 A063598 A063599 * A063601 A063602 A063603

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 1 18:28 EDT 2020. Contains 334762 sequences. (Running on oeis4.)