login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A063593 Smallest k such that 5^k has exactly n 8's in its decimal representation. 0
1, 7, 16, 11, 59, 43, 39, 44, 80, 117, 91, 75, 97, 114, 124, 139, 194, 171, 149, 243, 188, 242, 240, 248, 236, 283, 297, 334, 329, 273, 293, 389, 312, 322, 387, 436, 455, 443, 417, 427, 520, 498, 474, 448, 423, 480, 539, 569, 557, 548, 537 (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], 8] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a

CROSSREFS

Sequence in context: A069526 A061039 A258771 * A070417 A101681 A067776

Adjacent sequences:  A063590 A063591 A063592 * A063594 A063595 A063596

KEYWORD

base,nonn

AUTHOR

Robert G. Wilson v, Aug 10 2001

EXTENSIONS

Name corrected by Jon E. Schoenfield, Jun 26 2018

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 5 09:46 EDT 2020. Contains 333239 sequences. (Running on oeis4.)