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%I #7 Jan 30 2018 18:57:37
%S 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,
%T 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,
%U 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
%N Poincaré series [or Poincare series] of the preprojective algebra of a Dynkin diagram of type E_6.
%C The series is a polynomial because the algebra is finite dimensional. See the entry for A091575 for a general formula.
%D I. Reiten, Dynkin diagrams and the representation theory of algebras, Notices of the AMS, Vol. 44, Number 5.
%Y Cf. A091571, A091572, A091573, A091574, A091575, A091576.
%K easy,nonn
%O 0,1
%A _Paul Boddington_, Jan 22 2004
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