-5592405

Appears in sequences

• Expansion of 1/((1-x)*(1+2*x)).at n=23A077925
• Expansion of 1/(1-x+2*x^2-2*x^3).at n=46A077953
• Expansion of 1/(1 + x + 2*x^2 + 2*x^3).at n=46A077980
• A generalized Jacobsthal sequence.at n=24A083943
• a(n) = -5*a(n-1)-4*a(n-2) with n>1, a(0)=0, a(1)=1.at n=12A084241
• Expansion of (1+x^2)/((1-x+x^2)*(1+2*x^2)).at n=47A102517
• Expansion of x / ((1-x)*(4*x^2-2*x+1)).at n=23A157241
• Expansion of x / ((1-x)*(4*x^2-2*x+1)).at n=24A157241
• G.f.: x^2*(3+3*x+x^2) / ( (2*x+1) * (1+x) * (1+x+x^2) * (x^2-x+1) ) .at n=23A167617