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

3,3

Comments

Table 2, page 10 of Brown and Schnetz.

Links

Table of n, a(n) for n=3..10.

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.

Sequence in context: A119499 A079452 A081920 * A006390 A100597 A352184

Adjacent sequences: A224975 A224976 A224977 * A224979 A224980 A224981

Keyword

nonn

Author

Jonathan Vos Post, Apr 21 2013

Status

approved