8951355domain: NAppears in sequencesTriangle read by rows, s_4(n, k) where s_m(n, k) are the Stirling-Frobenius cycle numbers of order m; n >= 0, k >= 0.at n=30A225471Coefficient of x^2 in expansion of (x+3) * (x+7) * ... * (x+4*n-1).at n=7A383702