A014671 - OEIS

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A014671

Poincaré series [or Poincare series] (or Molien series) for mod 2 cohomology of alternating group A_7 subset A_8 acting on polynomial ring F_2[ x_1,y_1,z_1,w_1 ].

1

1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 2, 1, 1, 1, 3, 1, 2, 2, 3, 2, 3, 1, 5, 3, 3, 4, 6, 3, 5, 5, 7, 5, 7, 5, 9, 7, 7, 8, 12, 8, 11, 10, 12, 11, 13, 11, 17, 14, 14, 15, 20, 15, 19, 19, 22, 20, 22, 20, 27, 24, 25

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OFFSET

0,21

LINKS

Table of n, a(n) for n=0..70.

A. Adem, Recent developments in the cohomology of finite groups, Notices Amer. Math. Soc., 44 (1997), 806-812.

MAPLE

(1+t^18+t^20+t^21+t^24+t^25+t^27+t^45)/((1-t^8)*(1-t^12)*(1-t^14)*(1-t^15));

CROSSREFS

Sequence in context: A157925 A099244 A260221 * A029365 A204178 A365466

Adjacent sequences: A014668 A014669 A014670 * A014672 A014673 A014674

KEYWORD

nonn

AUTHOR

Alejandro Adem (adem(AT)math.wisc.edu)

STATUS

approved