205520896

Appears in sequences

• Expansion of (1 + x - 2*x^2)/(1 - 2*x)^2.at n=23A052951
• Expansion of x/(1 - 4*x^2 - 4*x^3).at n=24A099462
• Corresponds to m = 8 in a family of 4th-order linear recurrence sequences given by a(m,n) = m^4*a(n-4) + (2*m)^2*a(n-3) - 4*a(m-1), a(m,0) = -1, a(m,1) = 4, a(m,2) = -13 + 6*(m-1) + 3*(m-1)^2, a(m,3) = (-8+m^2)^2.at n=11A113254