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.

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.

Links

Table of n, a(n) for n=1..80.

Crossrefs

Cf. A051883, A073894, A099552.

Sequence in context: A263726 A328317 A088167 * A099552 A252749 A076199

Adjacent sequences: A073890 A073891 A073892 * A073894 A073895 A073896

Keyword

base,nonn,easy

Author

Amarnath Murthy, Aug 17 2002

Extensions

Edited and extended by David Wasserman, Oct 21 2004

Status

approved