A091576 Poincaré series [or Poincare series] of the preprojective algebra of a Dynkin diagram of type E_7.

7, 12, 17, 22, 27, 30, 33, 34, 35, 34, 33, 30, 27, 22, 17, 12, 7, 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

Offset

0,1

Comments

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

Links

Table of n, a(n) for n=0..88.

Crossrefs

Cf. A091571, A091572, A091573, A091574, A091575, A091577.

Sequence in context: A261410 A090067 A072354 * A364095 A272733 A272741

Adjacent sequences: A091573 A091574 A091575 * A091577 A091578 A091579

Keyword

easy,nonn

Author

Paul Boddington, Jan 22 2004

Status

approved