A005052 a(n) = 10*3^n.
10, 30, 90, 270, 810, 2430, 7290, 21870, 65610, 196830, 590490, 1771470, 5314410, 15943230, 47829690, 143489070, 430467210, 1291401630, 3874204890, 11622614670, 34867844010, 104603532030, 313810596090, 941431788270, 2824295364810, 8472886094430
Offset: 0
Links
- Vincenzo Librandi, Table of n, a(n) for n = 0..300
- Tanya Khovanova, Recursive Sequences
- Index entries for linear recurrences with constant coefficients, signature (3).
Crossrefs
Except for initial terms, same as A062107.
Programs
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Magma
[10*3^n: n in [0..30]]; // Vincenzo Librandi, Jun 10 2011
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Mathematica
10*3^Range[0, 60] (* Vladimir Joseph Stephan Orlovsky, Jun 09 2011 *)
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PARI
a(n)=10*3^n \\ Charles R Greathouse IV, Oct 07 2015
Formula
From Elmo R. Oliveira, Aug 14 2024: (Start)
G.f.: 10/(1-3*x).
E.g.f.: 10*exp(3*x).
a(n) = 3*a(n-1), n > 0. (End)