login
A073893
a(10k) = 0 and if n is not a multiple of 10 then a(n) is the smallest positive integer such that the concatenation of the first n terms is a multiple of n.
4
1, 2, 3, 2, 5, 2, 5, 6, 1, 0, 8, 4, 9, 4, 5, 6, 25, 2, 15, 0, 15, 10, 28, 16, 25, 16, 28, 16, 13, 0, 14, 4, 22, 36, 5, 16, 35, 14, 47, 0, 16, 8, 42, 28, 35, 18, 49, 44, 27, 0, 42, 4, 26, 6, 45, 52, 53, 38, 62, 0, 44, 50, 25, 28, 15, 32, 43, 72, 29, 0, 61, 44, 45, 8, 25, 56, 82, 84, 85, 0
OFFSET
1,2
COMMENTS
Note that the concatenation of the first 10k terms is not necessarily a multiple of 10k.
CROSSREFS
KEYWORD
base,nonn,easy
AUTHOR
Amarnath Murthy, Aug 17 2002
EXTENSIONS
Edited and extended by David Wasserman, Oct 21 2004
STATUS
approved