%I A037535
%S A037535 1,11,112,1121,11211,112112,1121121,11211211,112112112,1121121121,
%T A037535 11211211211,112112112112,1121121121121,11211211211211,112112112112112,
%U A037535 1121121121121121
%N A037535 Base 10 digits are, in order, the first n terms of the periodic sequence 
               with initial period 1,1,2.
%F A037535 a(n)=10*a(n-1)+(1/9)*{(n mod 3)+4*[(n+1) mod 3]+7*[(n+2) mod 3]}, with 
               a(0)=0 [From Paolo P. Lava (ppl(AT)spl.at), Jul 30 2009]
%Y A037535 Sequence in context: A030175 A058949 A075842 this_sequence A065834 A104720 
               A132926
%Y A037535 Adjacent sequences: A037532 A037533 A037534 this_sequence A037536 A037537 
               A037538
%K A037535 nonn,base
%O A037535 1,2
%A A037535 Clark Kimberling (ck6(AT)evansville.edu)