A014696 - OEIS

This site is supported by donations to The OEIS Foundation.

A014696

Poincare series (or Molien series) for mod 2 cohomology of universal W-group W(3).

1, 3, 14, 30, 77, 138, 273, 438, 748, 1113, 1729, 2436, 3542, 4788, 6630, 8676, 11571, 14751, 19096, 23826, 30107, 36894, 45695, 55146, 67158, 79989, 96019, 113064, 134044, 156264, 183260, 211752, 245973, 281979, 324786, 369702, 422617, 478002 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	REFERENCES	`A. Adem, Recent developments in the cohomology of finite groups, Notices Amer. Math. Soc., 44 (1997),806-812.`
	LINKS	`Index entries for two-way infinite sequences`
	FORMULA	`G.f.: (1+x+5x^2+x^3+x^4)/((1-x)^2*(1-x^2)^4). a(n)=-a(-6-n).`
	MAPLE	`(x^4+x^3+5*x^2+x+1)/(x-1)^2/(-1+x^2)^4;`
	PROG	`(PARI) a(n)=n+=3; n((18n^4-70n^2+97)-(50n^2-95)*(-1)^n)/3840`
	CROSSREFS	`Sequence in context: A085762 A057870 A031049 * A197944 A071396 A032525` `Adjacent sequences: A014693 A014694 A014695 * A014697 A014698 A014699`
	KEYWORD	`nonn`
	AUTHOR	`Alejandro Adem (adem(AT)math.wisc.edu)`

Content is available under The OEIS End-User License Agreement .

Last modified February 15 03:33 EST 2012. Contains 205694 sequences.