191694

Appears in sequences

• Expansion of (1-x)/(1-x+2*x^2-x^3).at n=44A078019
• Expansion of 1/(1 + 2*x + 3*x^2 + x^3).at n=29A127896
• a(0)=-1, a(1)=0, a(2)=1, a(n) = a(n-1) - 2*a(n-2) + a(n-3).at n=46A141576