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A026390 Expansion of (2 + x + x^2)/((1 - x)*(1 - x - x^2)). 1

%I

%S 2,5,11,20,35,59,98,161,263,428,695,1127,1826,2957,4787,7748,12539,

%T 20291,32834,53129,85967,139100,225071,364175,589250,953429,1542683,

%U 2496116,4038803,6534923,10573730

%N Expansion of (2 + x + x^2)/((1 - x)*(1 - x - x^2)).

%F a(n) = A022086(n+3) - 4.

%t Fibonacci[Range[3,5!]]*3-4 (* _Vladimir Joseph Stephan Orlovsky_, Nov 23 2010 *)

%o (PARI) Vec((2+x+x^2)/((1-x)*(1-x-x^2))+O(x^99)) \\ _Charles R Greathouse IV_, Sep 27 2012

%Y Cf. A022086.

%K nonn,easy

%O 0,1

%A _N. J. A. Sloane_

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Last modified February 23 13:18 EST 2018. Contains 299581 sequences. (Running on oeis4.)