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A098788 Stable Poincare series for Lie group of type A (i.e. the variety of complex nonsingular k X k matrices with distinct eigenvalues). 2
1, 2, 2, 4, 8, 15, 27, 47, 85, 153, 268, 466, 818, 1430, 2475, 4273, 7377, 12701, 21786, 37282, 63719, 108719, 185085, 314537, 533861, 904861, 1531370, 2588298, 4369783, 7369174, 12413458, 20889007, 35118175, 58986118 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Lehrer-Segal give a recurrence; both this reference and the Lehrer article give the first 50 terms.

REFERENCES

G. I. Lehrer and G. B. Segal, Homology stability for classical regular semisimple varieties, Math. Zeit., 236 (2001), 251-290; p. 286.

LINKS

G. I. Lehrer, Some sequences arising at the interface of representation theory and homotopy theory

CROSSREFS

Cf. A098787, A098789, A098705.

Sequence in context: A000018 A161905 A075126 * A190820 A153999 A154002

Adjacent sequences:  A098785 A098786 A098787 * A098789 A098790 A098791

KEYWORD

nonn,easy,nice

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Oct 28 2004

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Last modified February 17 07:41 EST 2012. Contains 205998 sequences.