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Search: id:A005412
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| A005412 |
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Feynman diagrams of order 2n.
(Formerly M3050)
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+0
1
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| 1, 3, 18, 153, 1638, 20898, 307908, 5134293, 95518278, 1967333838
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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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.
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LINKS
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P. Cvitanovic, B. Lautrup and R. B. Pearson, The number and weights of Feynman diagrams, Phys. Rev. D18, 1939 (1978).
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CROSSREFS
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Sequence in context: A118331 A138420 A152409 this_sequence A145350 A107888 A138274
Adjacent sequences: A005409 A005410 A005411 this_sequence A005413 A005414 A005415
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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