782281domain: NAppears in sequencesTriangle of 3rd central factorial numbers T(n,k).at n=23A098436Triangle read by rows, Stirling set numbers of order 3, T(n,n) = 1, T(n,k) = 0 if k<0 or k>n, otherwise T(n,k) = T(n-1,k-1)+k^3*T(n-1, k), for n>=0 and 0<=k<=n.at n=31A269948