login
A105310
a(n) = concatenation of i n times, with i = 1 to n.
0
1, 1122, 111222333, 1111222233334444, 1111122222333334444455555, 111111222222333333444444555555666666, 1111111222222233333334444444555555566666667777777
OFFSET
21,2
REFERENCES
F. Smarandache, "Properties of the numbers", Univ. of Craiova Archives, 1975; Arizona State University Special Collections, Tempe, AZ.
LINKS
Eric Weisstein's World of Mathematics, Smarandache Sequences.
EXAMPLE
a(10)=concatenation of (1^10)(2^10)(3^10)...(9^10)(10^10)
CROSSREFS
Sequence in context: A158729 A346219 A035859 * A200072 A261264 A125840
KEYWORD
base,easy,nonn,less
AUTHOR
Alexandre Wajnberg, Apr 25 2005
STATUS
approved