Triangle read by rows: T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = x + 5.

A257607

Triangle read by rows: T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = x + 5.

Terms

    a(0) =1a(1) =5a(2) =5a(3) =25a(4) =60a(5) =25a(6) =125a(7) =535a(8) =535a(9) =125a(10) =625a(11) =4210a(12) =7490a(13) =4210a(14) =625a(15) =3125a(16) =30885a(17) =86110a(18) =86110a(19) =30885a(20) =3125a(21) =15625a(22) =216560a(23) =880735a(24) =1377760a(25) =880735a(26) =216560a(27) =15625a(28) =78125a(29) =1471235

External references