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%I #8 May 11 2014 14:09:30
%S 20,22,26,34,41,46,56,67,80,88,104,109,119,130,134,142,149,163,173,
%T 184,197,214,221,226,236,247,260,268,284,298,317,328,341,349,365,379,
%U 398,418,431,439,455,469,488,508,521,529,545,559,578,598,620,628,644,658
%N a(1) = 20; a(n+1) = a(n) + sum of decimal digits of a(n).
%C elements >= 109 can be found in A007618.
%H <a href="/index/Coi#Colombian">Index entries for Colombian or self numbers and related sequences</a>
%t NestList[#+Total[IntegerDigits[#]]&,20,60] (* _Harvey P. Dale_, May 11 2014 *)
%Y Cf. A004207, A016052, A007618, A006507, A016052.
%K easy,nonn,base
%O 1,1
%A Miklos SZABO (mike(AT)ludens.elte.hu)
%E Edited by _Charles R Greathouse IV_, Aug 02 2010