5974388domain: NAppears in sequencesTriangle read by rows: T(n, k) is the Sheffer triangle ((1 - 3*x)^(-1/3), (-1/3)*log(1 - 3*x)). A generalized Stirling1 triangle.at n=39A286718Coefficient of x^3 in expansion of (x+1) * (x+4) * ... * (x+3*n-2).at n=8A382984