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A105311 a(n) = n concatenations of numbers from 1 to n, concatenated. 0
1, 1212, 123123123, 1234123412341234, 12345123451234512345, 123456123456123456123456123456123456, 1234567123456712345671234567123456712345671234567 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

F. Smarandache, "Properties of the numbers", Univ. of Craiova Archives, 1975; Arizona State University Special Collections, Tempe, AZ.

LINKS

Table of n, a(n) for n=1..7.

Eric Weisstein's World of Mathematics, Smarandache Sequences.

CROSSREFS

Cf. A098129, A000461.

Sequence in context: A250159 A184464 A204331 * A252125 A251815 A130680

Adjacent sequences:  A105308 A105309 A105310 * A105312 A105313 A105314

KEYWORD

easy,nonn,base

AUTHOR

Alexandre Wajnberg, Apr 25 2005

STATUS

approved

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Last modified November 29 06:32 EST 2021. Contains 349416 sequences. (Running on oeis4.)