99093domain: NAppears in sequencesSquare of the lower triangular normalized Eulerian number matrix.at n=25A027537Third diagonal of A027537.at n=4A027541Composite squarefree numbers n such that p-tau(n) divides n+sigma(n), where p are the prime factors of n, tau(n) = A000005(n) and sigma(n) = A000203(n).at n=9A229276