A081182 5th binomial transform of (0,1,0,2,0,4,0,8,0,16,...).
0, 1, 10, 77, 540, 3629, 23870, 155233, 1003320, 6462841, 41552050, 266875157, 1713054420, 10992415589, 70523904230, 452413483753, 2902085040240, 18615340276081, 119405446835290, 765901642003037, 4912691142818700
Offset: 0
Links
- Vincenzo Librandi, Table of n, a(n) for n = 0..300
- S. Falcon, Iterated Binomial Transforms of the k-Fibonacci Sequence, British Journal of Mathematics & Computer Science, 4 (22): 2014.
- Index entries for linear recurrences with constant coefficients, signature (10,-23).
Programs
-
Magma
I:=[0, 1]; [n le 2 select I[n] else 10*Self(n-1)-23*Self(n-2): n in [1..30]]; // Vincenzo Librandi, Aug 06 2013
-
Mathematica
Join[{a=0,b=1},Table[c=10*b-23*a;a=b;b=c,{n,60}]] (* Vladimir Joseph Stephan Orlovsky, Jan 27 2011 *) CoefficientList[Series[x / (1 - 10 x + 23 x^2), {x, 0, 30}], x] (* Vincenzo Librandi, Aug 06 2013 *) LinearRecurrence[{10,-23},{0,1},30] (* Harvey P. Dale, Jun 06 2021 *) -
Sage
[lucas_number1(n,10,23) for n in range(0, 21)] # Zerinvary Lajos, Apr 26 2009
Formula
a(n) = 10a(n-1) - 23a(n-2), a(0)=0, a(1)=1.
G.f.: x/(1 - 10x + 23x^2).
a(n) = ((5 + sqrt(2))^n - (5 - sqrt(2))^n)/(2*sqrt(2)).
a(n) = Sum_{k=0..n} C(n,2k+1) 2^k*5^(n-2k-1).
E.g.f.: exp(5*x)*sinh(sqrt(2)*x)/sqrt(2). - Ilya Gutkovskiy, Aug 12 2017
Comments