1014300domain: NAppears in sequencesMain diagonal of triangle A119937.at n=10A119939Triangle T(n, k) = (-1)^n*StirlingS2(n, k)*StirlingS2(n, n-k), read by rows.at n=39A155999Triangle T(n, k) = (-1)^n*StirlingS2(n, k)*StirlingS2(n, n-k), read by rows.at n=41A155999Numbers with prime factorization pq^2r^2s^2t^2.at n=5A190387