147081

Appears in sequences

• Engel expansion of sqrt(Pi) = 1.77245... .at n=10A059187
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = (-1)^n * Sum_{j=0..n} (-k*j)^j * binomial(n,j).at n=49A362019