%I A005411 M3610
%S A005411 1,4,25,208,2146,26368,375733,6092032,110769550,2232792064
%N A005411 Feynman diagrams of order 2n.
%D A005411 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A005411 P. Cvitanovic, B. Lautrup and R. B. Pearson, Number and weights of Feynman 
               diagrams, Phys. Rev. D 18 (1978), 1939-1949.
%H A005411 P. Cvitanovic, B. Lautrup and R. B. Pearson, <a href="http://www.nbi.dk/
               ~predrag/papers/PRD18-78.pdf">The number and weights of Feynman diagrams</
               a>, Phys. Rev. D18, 1939 (1978).
%Y A005411 Sequence in context: A036242 A120955 A061714 this_sequence A105628 A064299 
               A038174
%Y A005411 Adjacent sequences: A005408 A005409 A005410 this_sequence A005412 A005413 
               A005414
%K A005411 nonn
%O A005411 1,2
%A A005411 N. J. A. Sloane (njas(AT)research.att.com).