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Search: id:A002276
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A002276 2(10^n - 1)/9. +0
9
0, 2, 22, 222, 2222, 22222, 222222, 2222222, 22222222, 222222222, 2222222222, 22222222222, 222222222222, 2222222222222, 22222222222222, 222222222222222, 2222222222222222, 22222222222222222 (list; graph; listen)
OFFSET

0,2

FORMULA

a(n)=10*a(n-1)+2, with a(0)=0 [From Paolo P. Lava (ppl(AT)spl.at), Jan 23 2009]

CROSSREFS

Sequence in context: A058441 A037567 A137109 this_sequence A112893 A086855 A089182

Adjacent sequences: A002273 A002274 A002275 this_sequence A002277 A002278 A002279

KEYWORD

easy,nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.


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