

A091577


Poincaré series of the preprojective algebra of a Dynkin diagram of type E_6.


6



6, 10, 14, 18, 20, 20, 20, 18, 14, 10, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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OFFSET

0,1


COMMENTS

The series is a polynomial because the algebra is finite dimensional. See the entry for A091575 for a general formula.


REFERENCES

I. Reiten, Dynkin diagrams and the representation theory of algebras, Notices of the AMS, Vol. 44, Number 5.


LINKS

Table of n, a(n) for n=0..82.


CROSSREFS

Cf. A091571, A091572, A091573, A091574, A091575, A091576.
Sequence in context: A190712 A167200 A077667 * A115036 A133653 A073760
Adjacent sequences: A091574 A091575 A091576 * A091578 A091579 A091580


KEYWORD

easy,nonn,changed


AUTHOR

Paul Boddington, Jan 22 2004


STATUS

approved



