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A032611 Concatenation of n and n + 6 or {n,n+6}. +0
3
17, 28, 39, 410, 511, 612, 713, 814, 915, 1016, 1117, 1218, 1319, 1420, 1521, 1622, 1723, 1824, 1925, 2026, 2127, 2228, 2329, 2430, 2531, 2632, 2733, 2834, 2935, 3036, 3137, 3238, 3339, 3440, 3541, 3642, 3743, 3844, 3945, 4046, 4147, 4248 (list; graph; listen)
OFFSET

1,1

FORMULA

a(n)=n*10^floor(log10(n+6)+1)+n+6, with n>=0 [From Paolo P. Lava (ppl(AT)spl.at), Oct 09 2008]

CROSSREFS

Cf. A001704, A020338.

Sequence in context: A147218 A146856 A134468 this_sequence A081985 A087937 A103739

Adjacent sequences: A032608 A032609 A032610 this_sequence A032612 A032613 A032614

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), May 15, 1998.

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.


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