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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
OFFSET
0,2
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
KEYWORD
base,nonn
AUTHOR
Robert G. Wilson v, Aug 10 2001
EXTENSIONS
Name corrected by Jon E. Schoenfield, Jun 26 2018
STATUS
approved