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a(n) = n + next number > n beginning with same digit as n.
1

%I #5 Dec 15 2017 17:34:56

%S 11,22,33,44,55,66,77,88,99,21,23,25,27,29,31,33,35,37,119,41,43,45,

%T 47,49,51,53,55,57,229,61,63,65,67,69,71,73,75,77,339,81,83,85,87,89,

%U 91,93,95,97,449,101,103,105,107,109,111,113,115,117,559,121,123,125,127

%N a(n) = n + next number > n beginning with same digit as n.

%e a(1)=11 because 1 + the next number greater than 1 that begins with 1 is 10, which gives eleven. a(19)= 119 because 19 + the next number greater than 19 that begins with 1 is 100, which gives 119.

%Y Cf. A060317.

%K easy,nonn,base

%O 1,1

%A _Jason Earls_, Mar 27 2001