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A191658
Table, by rows, of denominators of alpha-coefficients in the symmetrized product of 2n Dirac matrices with two tensor indices.
2
1, 2, 3, 6, 3, 45, 4, 3, 9, 45, 315, 120, 9, 9, 45, 135, 315, 14175, 720, 36, 9, 81, 135, 135, 2025, 315, 945, 14175, 467775, 5040, 180, 27, 81, 135, 135, 405, 2025, 945, 945, 14175, 14175, 42525, 467775, 42567525
OFFSET
1,2
COMMENTS
The numerators are A191657. From table 1 by Izaurieta et al.
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
Cf. A191657.
Sequence in context: A267352 A101401 A106834 * A021427 A352478 A091834
KEYWORD
nonn,frac,tabf
AUTHOR
Jonathan Vos Post, Jun 10 2011
STATUS
approved