A224978 The number of completed primitive graphs of n loops, in enumerating Feynman graphs in quantum field theory.

1, 1, 2, 5, 14, 49, 227, 1354

Offset: 3

Author

Jonathan Vos Post, Apr 21 2013

Keywords

• nonn

Comments

Table 2, page 10 of Brown and Schnetz.

Links

• Francis Brown and Oliver Schnetz, Modular forms in quantum field theory, arXiv:1304.5342 [math.AG], Apr 19, 2013.
• F. Brown, On the periods of some Feynman integrals, arXiv:0910.0114v2 [math.AG], July 20, 2009.
• F. Brown, D. Doryn, Framings for graph hypersurfaces, arXiv:1301.3056v1 [math.AG], Jan 14, 2013.
• O. Schnetz, Quantum periods: a census of phi^4 transcendentals, arXiv:0801.2856 (2009), Table 1.

Crossrefs

Cf. A005411, A115974, A214298.