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A170978 Expansion of Product_{i=1..m-1} (1 + x^(4*i-1)) * (1 + x^(2*m-1)) for m = 6. 0
1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 2, 0, 0, 2, 1, 0, 0, 3, 1, 0, 2, 3, 0, 0, 2, 3, 0, 0, 4, 2, 0, 1, 4, 1, 0, 2, 4, 0, 0, 3, 2, 0, 0, 3, 2, 0, 1, 3, 0, 0, 1, 2, 0, 0, 2, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,12

COMMENTS

(Product_{i=1..m-1} (1 + x^(4*i-1))) * (1 + x^(2*m-1) is the Poincaré polynomial for O(2m).

REFERENCES

H. Weyl, The Classical Groups, Princeton, 1946, see p. 238.

LINKS

Table of n, a(n) for n=0..66.

CROSSREFS

Sequence in context: A134109 A325227 A325188 * A238353 A238354 A161364

Adjacent sequences:  A170975 A170976 A170977 * A170979 A170980 A170981

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane, Aug 29 2010

STATUS

approved

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Last modified September 22 09:47 EDT 2021. Contains 347606 sequences. (Running on oeis4.)