1056825

Appears in sequences

• Expansion of e.g.f. 1/sqrt(1-2x-2x^2).at n=7A098460
• G.f. satisfies: A(x) = 1 + x*A(x)^3 - 2*x^2*A(x)^2 + x^3*A(x).at n=12A200030