%I #3 Mar 31 2012 13:20:05
%S 1,9,51,233,942,3522,12473,42447,140109,451441,1426380,4434420,
%T 13599505,41225349,123723351,368080793,1086665562,3186317718,
%U 9286256393,26916587307,77634928209,222920650081
%N Third column (m=2) of triangle A060920 (bisection of Fibonacci triangle, even part).
%C Numerator polynomial of g.f. is sum(A061176(3,m)*x^m,m=0..3).
%F a(n)= A060920(n+2, 2).
%F G.f.: (1-x^3)/(1-3*x+x^2)^3.
%Y A001519, A054444.
%K nonn,easy
%O 0,2
%A _Wolfdieter Lang_, Apr 20 2001