-89478485

Appears in sequences

• Expansion of 1/((1-x)*(1+2*x)).at n=27A077925
• A generalized Jacobsthal sequence.at n=28A083943
• a(n) = -5*a(n-1)-4*a(n-2) with n>1, a(0)=0, a(1)=1.at n=14A084241
• Expansion of x / ((1-x)*(4*x^2-2*x+1)).at n=28A157241