|
%I #6 Apr 08 2013 09:33:14
%S 0,0,4,12,34,110,354,1120,3552,11290,35862,113884,361702,1148810,
%T 3648670,11588338,36805222,116895404,371266018,1179160836,3745078428,
%U 11894570660,37777796510,119984315496,381076645196,1210319938646,3844041278068,12208882029838
%N The sequence d[n] defined in A126940.
%F Empirical g.f.: -2*x^2*(x^3+3*x^2+2*x+2) / (x^6+4*x^5+4*x^4+7*x^3+x^2+2*x-1). - _Colin Barker_, Apr 08 2013
%K nonn
%O 0,3
%A _N. J. A. Sloane_, Mar 18 2007
|
