A170976 Expansion of (Product_{i=1..m-1} (1 + x^(4*i-1))) * (1 + x^(2*m-1)) for m = 4.

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

Offset

0,8

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..28.

Crossrefs

Sequence in context: A224447 A025436 A373954 * A134109 A325227 A325188

Adjacent sequences: A170973 A170974 A170975 * A170977 A170978 A170979

Keyword

nonn,fini,full

Author

N. J. A. Sloane, Aug 29 2010

Status

approved