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%I #7 Mar 30 2012 19:00:25
%S 1,2,3,4,5,6,7,8,9,15,16,17,18,19,27,28,29,38,39,49
%N Numbers less than or equal to sum of the triangular number of each of their decimal digits.
%C Sequence is finite with 20 terms.
%e 15 is in this sequence because 15 <= T(1) + T(5) = 16.
%Y Cf. A000217.
%K nonn,base,fini,full
%O 1,2
%A _Jaroslav Krizek_, May 07 2011