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A360208 Triangular array T(n,k) read by antidiagonals T(n,k) = F(n)!/(F(k)!*F(n-k)!), where F(m) = A000045(m) = m-th Fibonacci number. 2

%I #12 Feb 02 2023 16:53:05

%S 1,1,1,1,1,1,1,2,2,1,1,3,6,3,1,1,20,60,60,20,1,1,336,6720,10080,6720,

%T 336,1,1,154440,51891840,518918400,518918400,51891840,154440,1,1,

%U 8204716800,1267136462592000,212878925715456000,1419192838103040000,212878925715456000,1267136462592000,8204716800,1

%N Triangular array T(n,k) read by antidiagonals T(n,k) = F(n)!/(F(k)!*F(n-k)!), where F(m) = A000045(m) = m-th Fibonacci number.

%C Analogous to Pascal's triangle, A007318.

%F T(n,k) = F(n)!/(F(k)!*F(n - k)!), where F(m) = A000045(m) = m-th Fibonacci number.

%e First seven rows:

%e 1

%e 1 1

%e 1 1 1

%e 1 2 2 1

%e 1 3 6 3 1

%e 1 20 60 60 20 1

%e 1 336 6720 10080 6720 336 1

%e ...

%p F:= combinat[fibonacci]:

%p T:= (n, k)-> F(n)!/(F(k)!*F(n-k)!):

%p seq(seq(T(n, k), k=0..n), n=0..8); # _Alois P. Heinz_, Jan 30 2023

%t f[n_] := Fibonacci[n];

%t t = Table[f[n]!/(f[k]!*f[n - k]!), {n, 0, 8}, {k, 0, n}]

%t TableForm[t] (* A360208, array *)

%t Flatten[t] (* A360208, sequence *)

%Y Cf. A000045, A007318, A360207.

%K nonn,tabl

%O 0,8

%A _Clark Kimberling_, Jan 30 2023

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Last modified May 9 14:31 EDT 2024. Contains 372351 sequences. (Running on oeis4.)