0,2

Index entries for sequences related to linear recurrences with constant coefficients

Tanya Khovanova, Recursive Sequences

a(n)={11*[((3+sqrt(5))/2)^n - ((3-sqrt(5))/2)^n]-[((3+sqrt(5))/2)^(n-1) - ((3-sqrt(5))/2)^(n-1)]}/sqrt(5).

G.f.(x)=(1+8x)/(1-3x+x^2).

6*Lucas(2n+1) - Fibonacci(2n+5).

Cf. A055850.

Sequence in context: A059134 A007790 A048773 this_sequence A006655 A018956 A018947

Adjacent sequences: A056120 A056121 A056122 this_sequence A056124 A056125 A056126

easy,nonn

Barry E. Williams, Jul 06 2000