%I A005415 M2080
%S A005415 1,0,1,2,15,140,1915
%N A005415 Tensors with n external gluons.
%D A005415 P. Cvitanovic, Group theory for Feynman diagrams in non-Abelian gauge 
               theories, Phys. Rev. D 14 (1976), 1536-1553.
%D A005415 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%H A005415 P. Cvitanovic, <a href="http://www.nbi.dk/~predrag/papers/PRD14-76.pdf">
               Group theory for Feynman diagrams in non-Abelian gauge theories</
               a>, Phys. Rev. D14 (1976), 1536-1553.
%Y A005415 Sequence in context: A132182 A140306 A143924 this_sequence A111686 A001854 
               A060226
%Y A005415 Adjacent sequences: A005412 A005413 A005414 this_sequence A005416 A005417 
               A005418
%K A005415 nonn,nice,more
%O A005415 0,4
%A A005415 N. J. A. Sloane (njas(AT)research.att.com).