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A032613 Concatenation of n and n + 8 or {n,n+8}. 2
19, 210, 311, 412, 513, 614, 715, 816, 917, 1018, 1119, 1220, 1321, 1422, 1523, 1624, 1725, 1826, 1927, 2028, 2129, 2230, 2331, 2432, 2533, 2634, 2735, 2836, 2937, 3038, 3139, 3240, 3341, 3442, 3543, 3644, 3745, 3846, 3947, 4048, 4149 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

FORMULA

a(n)=n*10^floor(log10(n+8)+1)+n+8, with n>=0 [From Paolo P. Lava (paoloplava(AT)gmail.com), Oct 09 2008]

CROSSREFS

Cf. A001704, A020338.

Sequence in context: A125407 A023017 A022647 * A199132 A201791 A099663

Adjacent sequences:  A032610 A032611 A032612 * A032614 A032615 A032616

KEYWORD

nonn,base

AUTHOR

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

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Last modified February 16 02:30 EST 2012. Contains 205860 sequences.