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A126948 The sequence d[n] defined in A126940. 1

%I

%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

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Last modified September 29 04:06 EDT 2020. Contains 337420 sequences. (Running on oeis4.)