login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A091576 Poincaré series [or Poincare series] of the preprojective algebra of a Dynkin diagram of type E_7. 6
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 (list; graph; refs; listen; history; text; internal format)
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 * A272733 A272741 A091573

Adjacent sequences:  A091573 A091574 A091575 * A091577 A091578 A091579

KEYWORD

easy,nonn

AUTHOR

Paul Boddington, Jan 22 2004

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 25 01:31 EDT 2021. Contains 346273 sequences. (Running on oeis4.)