A087342 - OEIS

A087342

Smallest multiple of n which is the concatenation of n successive numbers in descending order, or 0 if no such number exists.

%I #4 Dec 05 2013 19:56:21

%S 1,32,321,5432,98765,765432,22212019181716,98765432,987654321,

%T 19181716151413121110,2019181716151413121110,1312111098765432,

%U 19181716151413121110987,2928272625242322212019181716

%N Smallest multiple of n which is the concatenation of n successive numbers in descending order, or 0 if no such number exists.

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

%Y Cf. A087343.

%K base,nonn

%O 1,2

%A _Amarnath Murthy_, Sep 06 2003

%E More terms from _David Wasserman_, May 10 2005