A178687 Expansion of the polynomial (1+x^3)*(1+x^5)*(1+x^7)*(1+x^9)*(1+x^11).

1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 2, 0, 2, 1, 2, 1, 1, 2, 1, 2, 0, 2, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1

Offset

0,13

Comments

This is the Poincaré polynomial for the Lie group A_5.

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..35.

Crossrefs

A row of A142724.

Sequence in context: A352697 A165414 A330868 * A325538 A238417 A117929

Adjacent sequences: A178684 A178685 A178686 * A178688 A178689 A178690

Keyword

nonn,fini,full

Author

N. J. A. Sloane, Dec 25 2010

Status

approved