0,2
Table of n, a(n) for n=0..28.
Index entries for linear recurrences with constant coefficients, signature (3,-1,-2).
a(n) = 8*2^n - Fibonacci(n+5) - Fibonacci(n+3).
a(n) = A101220(4, 2, n+1).
G.f.: (1+2*x)/((1-2*x)*(1-x-x^2)). [R. J. Mathar, Sep 22 2008]
Sequence in context: A066767 A227200 * A027983 A142585 A234097 A211562
Adjacent sequences: A027971 A027972 A027973 * A027975 A027976 A027977
nonn,easy
Clark Kimberling
approved