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A005052
a(n) = 10*3^n.
4
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
0,1
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)
MATHEMATICA
10*3^Range[0, 60] (* Vladimir Joseph Stephan Orlovsky, Jun 09 2011 *)
PROG
(Magma) [10*3^n: n in [0..30]]; // Vincenzo Librandi, Jun 10 2011
(PARI) a(n)=10*3^n \\ Charles R Greathouse IV, Oct 07 2015
CROSSREFS
Except for initial terms, same as A062107.
Sequence in context: A229466 A269261 A328259 * A057344 A115134 A245428
KEYWORD
nonn,easy
STATUS
approved