225266

Appears in sequences

• G.f. A(x) satisfies A(x/A(x)) = 1/(1-x).at n=9A088713
• Array read by downward antidiagonals: A(n,k) = A(n-1,k+1) + Sum_{j=0..k} A(n-1,j)*A(k-j,0) with A(0,k) = 1.at n=44A392095