16257024

Appears in sequences

• Denominator of (binomial(2*n-2,n-1)/n!)^2.at n=8A005017
• Number of strongly triple-free subsets of {1, 2, ..., n}.at n=31A050295
• Cyclic quadrilateral numbers: numbers m = a*b*c*d such that the integers a,b,c,d are the sides of a cyclic quadrilateral whose area and circumradius are integers.at n=26A218431
• Square array T(n,k), n >= 1, k >= 1, read by antidiagonals, where T(n,k) = Product_{a=1..n-1} Product_{b=1..k-1} (4*sin(a*Pi/n)^2 + 4*sin(b*Pi/k)^2).at n=30A340560
• Square array T(n,k), n >= 1, k >= 1, read by antidiagonals, where T(n,k) = Product_{a=1..n-1} Product_{b=1..k-1} (4*sin(a*Pi/n)^2 + 4*sin(b*Pi/k)^2).at n=33A340560
• Table read by rows. T(n, k) = [x^k] n! * Sum_{j=0..n} binomial(n*x, j).at n=40A358366