0,5
(1/30)[3^n*Fibonacci(n) - 3*Fibonacci(2n)]. - R. Stephan, May 14 2004
Cf. A014336.
Sequence in context: A026987 A030532 A026997 * A002041 A103995 A009572
Adjacent sequences: A014334 A014335 A014336 * A014338 A014339 A014340
nonn
N. J. A. Sloane (njas(AT)research.att.com).