

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
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OFFSET

1,2


LINKS



EXAMPLE

a(7) = 22212019181716 is the concatenation of 22,21,20,19,18,17 and 16 and is divisible by 7.


CROSSREFS



KEYWORD

base,nonn


AUTHOR



EXTENSIONS



STATUS

approved



