-178956970

Appears in sequences

• A generalized Jacobsthal sequence.at n=28A083944
• a(n)= -3a(n-1) -3a(n-2)-2a(n-3), a(0)=1, a(1)=-2, a(2)=2.at n=29A131562
• G.f.: (1+x)/(1+x-2*x^2).at n=29A151575