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A130129 (3*n+1)*2^n. 3

%I

%S 1,8,28,80,208,512,1216,2816,6400,14336,31744,69632,151552,327680,

%T 704512,1507328,3211264,6815744,14417920,30408704,63963136,134217728,

%U 281018368,587202560,1224736768,2550136832,5301600256,11005853696,22817013760

%N (3*n+1)*2^n.

%H Vincenzo Librandi, <a href="/A130129/b130129.txt">Table of n, a(n) for n = 0..300</a>

%H <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (4,-4).

%F a(n+1) - a(n) = A066373(n+3). - _J. M. Bergot_, Apr 21 2013

%F G.f. ( 1+4*x ) / (2*x-1)^2 . - _R. J. Mathar_, Apr 25 2013

%o (MAGMA) [(3*n+1)*2^n: n in [0..30]]; // _Vincenzo Librandi_, May 04 2011

%Y Cf. A016921 (inverse binomial transform)

%K nonn,easy

%O 0,2

%A _Paul Curtz_, Aug 01 2007

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Last modified August 13 05:41 EDT 2020. Contains 336442 sequences. (Running on oeis4.)