A096688 Least k such that decimal representation of k*n contains only digits 0 and 9.

9, 45, 3, 225, 18, 15, 1287, 1125, 1, 9, 9, 75, 693, 6435, 6, 5625, 5877, 5, 5211, 45, 429, 45, 43083, 375, 36, 3465, 37, 32175, 341721, 3, 32229, 28125, 3, 29385, 2574, 25, 27, 26055, 231, 225, 2439, 2145, 230463, 225, 2, 215415, 1917, 1875, 202041, 18, 1959

Offset

1,1

Links

Table of n, a(n) for n=1..51.

Formula

a(n) = A078248(n)/n.

Crossrefs

Cf. A004290, A078241-A078248, A079339, A096681-A096688.

Sequence in context: A125679 A037207 A225488 * A181431 A249067 A366420

Adjacent sequences: A096685 A096686 A096687 * A096689 A096690 A096691

Keyword

base,nonn

Author

Ray Chandler, Jul 12 2004

Status

approved