OFFSET
1,2
COMMENTS
The numerators are A191657. From table 1 by Izaurieta et al.
LINKS
Fernando Izaurieta, Ricardo RamÃrez, Eduardo RodrÃguez, An efficient algorithm for the computation of the trace of the symmetrized product of an arbitrary number of Dirac matrices with two indices, arXiv:1106.1648, June 08 2011.
EXAMPLE
The coefficients corresponding to each partition of 4 are:
1 + 1 + 1 + 1 -> 1/24;
2 + 1 + 1 -> -1/3;
2 + 2 -> 2/9;
3 + 1 -> 32/45;
4 -> -272/315.
CROSSREFS
KEYWORD
nonn,frac,tabf
AUTHOR
Jonathan Vos Post, Jun 10 2011
STATUS
approved