A063593 Smallest k such that 5^k has exactly n 8's in its decimal representation.

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

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