96313domain: NAppears in sequencesArray read by downward antidiagonals: A(n,k) = A(n-1,k+1) + (k+1)*Sum_{j=0..k} A(n-1,j) with A(0,k) = k+1, n >= 0, k >= 0.at n=40A371567Expansion of (1/x) * Series_Reversion( x / (1 + x^3 * (1 + x)^4) ).at n=15A389156