A089254 - OEIS

%I #3 Mar 30 2012 16:49:50

%S 1,-1,0,-2,1,-2,2,-2,5,-3,8,-3,13,-6,16,-15,21,-28,21,-52,22,-90,23,

%T -136,40,-190,79,-237,185,-254,385,-219,740,-116,1279,49,2039,198,

%U 2923,130,3785,-541,4215,-2464,3638,-6581,1204,-14062,-3889,-26110,-12267,-43399,-23264,-65206,-34085,-87955,-37666

%N G.f.: Product_{m>=1} 1/(1+x^m)^A000009(m).

%Y Cf. A050342, A000009, A001970, A089259.

%K sign

%O 0,4

%A _N. J. A. Sloane_, Dec 23 2003