A178600 Expansion of the polynomial (1+x^3)*(1+x^11).

1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1

Offset

0,1

Comments

This is the Poincaré polynomial for the Lie group G_2.

References

Borel, A. and Chevalley, C., The Betti numbers of the exceptional groups, Mem. Amer. Math. Soc. 1955, no. 14, pp 1-9.

Links

Table of n, a(n) for n=0..14.

Mathematica

CoefficientList[Series[(1+x^3)*(1+x^11), {x, 0, 200}], x] (* Harvey P. Dale, Oct 22 2011 *)

Crossrefs

Sequence in context: A154282 A359552 A224877 * A359170 A014702 A015395

Adjacent sequences: A178597 A178598 A178599 * A178601 A178602 A178603

Keyword

nonn,fini,full,easy

Author

N. J. A. Sloane, Dec 24 2010

Status

approved