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Search: id:A049851
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A049851 Concatenate "prevprime(n)" and "n". +0
1
23, 34, 35, 56, 57, 78, 79, 710, 711, 1112, 1113, 1314, 1315, 1316, 1317, 1718, 1719, 1920, 1921, 1922, 1923, 2324, 2325, 2326, 2327, 2328, 2329, 2930, 2931, 3132, 3133, 3134, 3135, 3136, 3137, 3738, 3739, 3740, 3741, 4142, 4143, 4344 (list; graph; listen)
OFFSET

3,1

MAPLE

P:=proc(i) local a, n; for n from 3 by 1 to i do a:=prevprime(n)*10^floor(evalf(log10(n)+1, 100))+n; print(a); od; end: P(100); [From Paolo P. Lava (ppl(AT)spl.at), Jan 21 2009]

CROSSREFS

Sequence in context: A043909 A145566 A146595 this_sequence A120147 A166499 A045533

Adjacent sequences: A049848 A049849 A049850 this_sequence A049852 A049853 A049854

KEYWORD

nonn,base

AUTHOR

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

page 1

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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