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%I #4 Mar 31 2012 13:46:51
%S 10,11,12,21,23,24,31,32,35,36,42,48,52,54,58,64,69,72,74,82,84,86,95,
%T 119,127,135,149,159,194,219,228,237,239,309,318,320,329,337,380,402,
%U 408,415,419,428,490,494,498,501,509,510,513,518,521,525,527
%N Making the absolute difference between the last two digits of a(n) gives the n-t h digit of the sequence; a(n) < a(n+1).
%e For n=1, a(n)=10; (1-0)=1 thus 1 is the first digit of sequence.
%e For n=2, a(n)=11; (1-1)=0 thus 0 is the 2nd digit of sequence.
%e For n=3, a(n)=12; (2-1)=1 thus 1 is the 3rd digit of sequence.
%e For n=4, a(n)=21; (2-1)=1 thus 1 is the 4th digit of sequence.
%K base,easy,nonn
%O 1,1
%A _Eric Angelini_, Feb 04 2005