OFFSET
0,21
COMMENTS
This is the Poincaré polynomial for the Lie group E_6.
REFERENCES
Borel, A. and Chevalley, C., The Betti numbers of the exceptional groups, Mem. Amer. Math. Soc. 1955, no. 14, pp 1-9.
MATHEMATICA
CoefficientList[Series[(1+x^3)(1+x^9)(1+x^11)(1+x^15)(1+x^17)(1+x^23), {x, 0, 120}], x] (* Harvey P. Dale, Dec 06 2021 *)
CROSSREFS
KEYWORD
nonn,fini,full,easy
AUTHOR
N. J. A. Sloane, Dec 24 2010
STATUS
approved