389367

Appears in sequences

• a(n) = 9*binomial(2n,n-4)/(n+5).at n=8A001392
• Triangle, read by rows, defined by: T(n,k) = (4*k+1)*binomial(2*n+1, n-2*k)/(2*n+1) for n >= 2*k >= 0.at n=44A119245
• 9th column of Catalan triangle A009766.at n=8A124087
• Central coefficients T(2n,n) of the Catalan triangle A033184.at n=8A174687
• Number A(n,k) of standard Young tableaux of shape [n*k,n]; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=63A214776
• Number of standard Young tableaux of shape [8n,8].at n=2A215548
• Expansion of 1/((1 - x)^9 + x^9).at n=15A306942
• Expansion of 1/((1 - x)^9 + x^9).at n=16A306942
• Triangle read by rows, interpolating between the central binomial coefficients and the central coefficients of the Catalan triangle. T(n, k) for 0 <= k <= n.at n=44A330798
• Number of Young tableaux of shape [n, floor(n/2)].at n=16A368567