OFFSET
0,1
COMMENTS
Pisot sequences E(4,5), P(4,5), T(4,5).
LINKS
Tanya Khovanova, Recursive Sequences.
Index entries for linear recurrences with constant coefficients, signature (2,-1).
FORMULA
a(n) = 2*a(n-1) - a(n-2).
From Elmo R. Oliveira, Oct 30 2024: (Start)
G.f.: (4 - 3*x)/(1 - x)^2.
E.g.f.: (4 + x)*exp(x).
MATHEMATICA
Range[4, 100] (* Wesley Ivan Hurt, May 17 2023 *)
PROG
(PARI) a(n)=n+4
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved