8164263

Appears in sequences

• G.f. satisfies A(x) = 1 + x*(A(x)^2 + 2*A(x)^3).at n=7A219536
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where T(n,k) = Sum_{j=0..n} 2^j * binomial(n,j) * binomial(k*n+j+1,n)/(k*n+j+1).at n=52A336574