40854

Appears in sequences

• Numbers n such that pi(n)=pi(d_1!)+pi(d_2!)+...+pi(d_k!) where d_1 d_2 ...d_k is the decimal expansion of n.at n=11A105327
• G.f. satisfies A(x) = 1 + x*(A(x)^2 + 2*A(x)^3).at n=5A219536
• 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=33A336574