OFFSET
0,4
COMMENTS
FORMULA
Triangle T(n, k)=denominator((n+1)binomial(n, k)/binomial(2n, n))
EXAMPLE
Rows begin
1;
1,1;
2,1,2;
5,5,5,5;
14,7,7,7,14;
...
MATHEMATICA
T[n_, k_] := Denominator[(n + 1)*(Binomial[n, k]/Binomial[2*n, n])];
Table[T[n, k], {n, 0, 10}, {k, 0, n}] // Flatten (* Jean-François Alcover, Jan 07 2018 *)
CROSSREFS
KEYWORD
AUTHOR
Paul Barry, Sep 11 2004
STATUS
approved