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A124633 Poincaré series [or Poincare series] P(C^o_{3,2}; x). 0
1, 2, 9, 25, 66, 149, 329, 650, 1248, 2255, 3941, 6608, 10799, 17085, 26456, 39983, 59306, 86274, 123572, 174146, 242186, 332312, 450738, 604418, 802447, 1054848, 1374561, 1775839, 2276528, 2896401, 3659799, 4593424, 5729858, 7104777, 8760897, 10745098 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..35.

Dragomir Z. Djokovic, Poincaré series [or Poincare series] of some pure and mixed trace algebras of two generic matrices. See Table 8.

FORMULA

G.f.: (x^12+3*x^10+6*x^9+9*x^8+6*x^7+12*x^6+6*x^5+9*x^4+6*x^3+3*x^2+1) / ((1-x)^2*(1-x^2)^3*(1-x^3)^3*(1-x^4)).

CROSSREFS

Sequence in context: A173965 A116454 A295143 * A093122 A305351 A101051

Adjacent sequences:  A124630 A124631 A124632 * A124634 A124635 A124636

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Dec 21 2006

STATUS

approved

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Last modified October 25 01:40 EDT 2021. Contains 348233 sequences. (Running on oeis4.)