A117617 a(n) = 5*a(n-1) + 3 with a(0) = 1.
1, 8, 43, 218, 1093, 5468, 27343, 136718, 683593, 3417968, 17089843, 85449218, 427246093, 2136230468, 10681152343, 53405761718, 267028808593, 1335144042968, 6675720214843, 33378601074218, 166893005371093
Offset: 0
Keywords
Examples
If n=1 then a(1) = 5*a(0) + 3 = 5*1 + 3 = 8 which is the second term.
Links
- Vincenzo Librandi, Table of n, a(n) for n = 0..1000
- Index entries for linear recurrences with constant coefficients, signature (6, -5).
Crossrefs
Cf. A116952.
Programs
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Mathematica
a[0] := 1; a[n_] := 5*a[n - 1] + 3; Table[a[n], {n, 0, 35}] (* Stefan Steinerberger, Apr 08 2006 *) NestList[5#+3&,1,20] (* Harvey P. Dale, Jun 14 2024 *)
Formula
G.f.: (1+2*x)/((1-x)*(1-5*x)). - Philippe Deléham, Feb 22 2014
a(n) = 6*a(n-1) - 5*a(n-2), a(0) = 1, a(1) = 8. - Philippe Deléham, Feb 22 2014
Extensions
More terms from Stefan Steinerberger, Apr 08 2006