926073

Appears in sequences

• Expansion of x^5*(2-5*x+3*x^2-x^3)/((1-x)^2*(1-2*x)^2*(1-3*x+x^2)).at n=16A229736
• Triangle T(n,r) read by rows: order of the semigroup of orientation-preserving partial transformations of n elements with breath r.at n=53A289710