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A087342
Smallest multiple of n which is the concatenation of n successive numbers in descending order, or 0 if no such number exists.
1
1, 32, 321, 5432, 98765, 765432, 22212019181716, 98765432, 987654321, 19181716151413121110, 2019181716151413121110, 1312111098765432, 19181716151413121110987, 2928272625242322212019181716
OFFSET
1,2
EXAMPLE
a(7) = 22212019181716 is the concatenation of 22,21,20,19,18,17 and 16 and is divisible by 7.
CROSSREFS
Cf. A087343.
Sequence in context: A239422 A165008 A095152 * A083468 A125395 A126553
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Sep 06 2003
EXTENSIONS
More terms from David Wasserman, May 10 2005
STATUS
approved