1277998domain: NAppears in sequencesA triangular sequence recursion: A(n,k)=A(n - 1, k - 1) + A(n - 1, k) + (5 (-2 + n) (-7 + 5 n))*A(n - 2, k - 1).at n=23A153879A triangular sequence recursion: A(n,k)=A(n - 1, k - 1) + A(n - 1, k) + (5 (-2 + n) (-7 + 5 n))*A(n - 2, k - 1).at n=25A153879