Triangle, read by rows, where T(n,k) = k!*C(n, k)*5^(n-k) for n>=0, k=0..n.

Terms

a(0) =1a(1) =5a(2) =1a(3) =25a(4) =10a(5) =2a(6) =125a(7) =75a(8) =30a(9) =6a(10) =625a(11) =500a(12) =300a(13) =120a(14) =24a(15) =3125a(16) =3125a(17) =2500a(18) =1500a(19) =600a(20) =120a(21) =15625a(22) =18750a(23) =18750a(24) =15000a(25) =9000a(26) =3600a(27) =720a(28) =78125a(29) =109375