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) = 6*x + 2.
A257616
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) = 6*x + 2.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =4a(4) =32a(5) =4a(6) =8a(7) =312a(8) =312a(9) =8a(10) =16a(11) =2656a(12) =8736a(13) =2656a(14) =16a(15) =32a(16) =21664a(17) =175424a(18) =175424a(19) =21664a(20) =32a(21) =64a(22) =174336a(23) =3019200a(24) =7016960a(25) =3019200a(26) =174336a(27) =64a(28) =128a(29) =1397120
External references
- oeis: A257616