A173780 - OEIS

A173780

a(n) = largest number k such that k and k * n taken together have distinct digits, or 0 if no such k exists.

0, 48651, 32058, 23715, 18654, 9347, 14076, 12345, 10836, 0, 0, 8946, 7956, 9804, 8469, 9423, 9724, 9603, 9603, 9327, 0, 9765, 8763, 8235, 9486, 9781, 6489, 4635, 8769, 5832, 0, 9846, 5463, 8145, 9862, 2735, 5643, 9165, 7956, 7956, 0, 8712, 7956

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OFFSET

1,2

COMMENTS

a(987654320) = 1 is the last nonzero term in sequence.

LINKS

Table of n, a(n) for n=1..43.

EXAMPLE

a(2) = 48651 because 48651 and 97302 (48651*2) taken together have distinct digits and there exists no larger number with this property.

CROSSREFS

Sequence in context: A245794 A048341 A062204 * A252444 A237146 A210401

Adjacent sequences: A173777 A173778 A173779 * A173781 A173782 A173783

KEYWORD

base,nonn

AUTHOR

Claudio Meller, Feb 24 2010

EXTENSIONS

Edited and extended by Ray Chandler, Mar 02 2010

STATUS

approved