9746883

Appears in sequences

• Expansion of -(2*x*sqrt(1-8*x^2)-2*x) / (16*x^3+sqrt(1-8*x^2)*(4*x^2+2*x-1)-8*x^2-2*x+1).at n=17A243019
• Number of self-trapped uncrossed king's paths on an infinite board after n steps, reduced for symmetry.at n=12A323141