%I A006048 M2519
%S A006048 1,3,6,8,12,18,21,27,36,38,42,48,52,60,72,78,90,108,111,117,126,132,144,
%T A006048 162,171,189,216,218,222,228,232,240,252,258,270,288,292,300,312,320,336,
               360,372,396
%N A006048 Entries in first n rows of Pascal's triangle not divisible by 3.
%D A006048 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A006048 J.-P. Allouche and J. Shallit, The ring of k-regular sequences, Theoretical 
               Computer Sci., 98 (1992), 163-197.
%D A006048 A. Lakhtakia et al., Fractal sequences derived from the self-similar 
               extensions of the Sierpinski gasket, J. Phys. A 21 (1988), 1925-1928.
%D A006048 A. Lakhtakia and R. Messier, Self-similar sequences and chaos from Gauss 
               sums, Computers and Graphics, 13 (1989), 59-62.
%H A006048 J.-P. Allouche and J. Shallit, <a href="http://www.cs.uwaterloo.ca/~shallit/
               Papers/as0.ps">The ring of k-regular sequences</a>, Theoretical Computer 
               Sci., 98 (1992), 163-197.
%Y A006048 Sequence in context: A077024 A082873 A161909 this_sequence A049827 A072107 
               A084578
%Y A006048 Adjacent sequences: A006045 A006046 A006047 this_sequence A006049 A006050 
               A006051
%K A006048 nonn
%O A006048 0,2
%A A006048 Jeffrey Shallit