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) = 7*x + 2.

A257617

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) = 7*x + 2.

Terms

    a(0) =1a(1) =2a(2) =2a(3) =4a(4) =36a(5) =4a(6) =8a(7) =388a(8) =388a(9) =8a(10) =16a(11) =3676a(12) =12416a(13) =3676a(14) =16a(15) =32a(16) =33564a(17) =283204a(18) =283204a(19) =33564a(20) =32a(21) =64a(22) =303260a(23) =5538184a(24) =13027384a(25) =5538184a(26) =303260a(27) =64a(28) =128a(29) =2732156

External references