OFFSET
0,1
LINKS
Tanya Khovanova, Recursive Sequences
Index entries for linear recurrences with constant coefficients, signature (1,1).
FORMULA
G.f.: (3+7x)/(1-x-x^2). - Philippe Deléham, Nov 19 2008
From Wajdi Maaloul, Jun 09 2022: (Start)
a(n) = 3*Lucas(n+1) + Fibonacci(n).
a(n) = 3*Fibonacci(n+1) + 7*Fibonacci(n).
a(n) = a(n-1) + a(n-2). (End)
MATHEMATICA
a={}; b=3; c=10; AppendTo[a, b]; AppendTo[a, c]; Do[b=b+c; AppendTo[a, b]; c=b+c; AppendTo[a, c], {n, 4!}]; a (* Vladimir Joseph Stephan Orlovsky, Sep 17 2008 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved