-6325

Appears in sequences

• G.f. A(x) satisfies: A(x) = 1 + x - x^2 * A(x/(1 - x)) / (1 - x).at n=14A346078
• Triangle read by rows: Riordan array (2 - D(x), x * D(x)) where D(x) is g.f. of A001764.at n=57A380191