A078252 Smallest n-digit multiple of n in which the even-numbered digits are all equal and the odd-numbered digits are all equal, or 0 if no such number exists.

1, 10, 111, 1212, 50505, 101010, 7070707, 16161616, 111111111, 1010101010, 29292929292, 121212121212, 0, 14141414141414, 525252525252525, 1616161616161616, 0, 101010101010101010, 0, 20202020202020202020

Offset

1,2

Links

Table of n, a(n) for n=1..20.

Crossrefs

Cf. A078253.

Sequence in context: A290618 A290626 A087545 * A014993 A015592 A122574

Adjacent sequences: A078249 A078250 A078251 * A078253 A078254 A078255

Keyword

base,nonn

Author

Amarnath Murthy, Nov 24 2002

Extensions

Corrected and extended by Sascha Kurz, Jan 04 2003

Status

approved