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A005414 Feynman diagrams of order 2n.
(Formerly M4906)
+0
1
1, 1, 13, 93, 1245, 18093, 308605, 5887453, 124221373, 2864305277 (list; graph; listen)
OFFSET

1,3

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

P. Cvitanovic, B. Lautrup and R. B. Pearson, Number and weights of Feynman diagrams, Phys. Rev. D 18 (1978), 1939-1949.

LINKS

P. Cvitanovic, B. Lautrup and R. B. Pearson, The number and weights of Feynman diagrams, Phys. Rev. D18, 1939 (1978).

CROSSREFS

Sequence in context: A027670 A055608 A038742 this_sequence A044264 A044645 A094499

Adjacent sequences: A005411 A005412 A005413 this_sequence A005415 A005416 A005417

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.


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