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%I #6 Jul 28 2013 13:55:16
%S 0,1,4,12,32,74,156,310,580,1035,1780,2956,4764,7487,11492,17274,
%T 25492,36979,52812,74372,103364,141927,192724,258982,344652,454544,
%U 594392,771084,992852,1269377,1612104,2034508,2552248,3183594,3949784,4875248,5988168
%N A127790(n)/2.
%F G.f.: x / ((x-1)^10*(x+1)^2*(x^2+x+1)^4). - _Colin Barker_, Jul 27 2013
%K nonn,easy
%O 0,3
%A _N. J. A. Sloane_, Apr 07 2007