11202048

Appears in sequences

• Triangle T(n,k), 0 <= k <= n, defined by : T(n,k) = 0 if k < 0, T(0,k) = 0^k, (n+2)*(2*n-2*k+1)*T(n,k) = (2*n+1)*( 4*(2*n-2*k+1)*T(n-1,k-1) + (n+2*k+2)*T(n-1,k) ).at n=43A123382
• Number of 10-D hypercubes in an n-dimensional hypercube.at n=8A172242
• 10-quantum transitions in systems of N >= 10 spin 1/2 particles, in columns by combination indices.at n=20A213352
• Number of pairs of orthogonal (-x,y) vectors of length 1*(x+y), where x/y is the n-th rational <= 1, ordered first by y and then x, e.g. 1/1, 1/2, 1/3, 2/3, 1/4, 3/4 ...at n=30A225986
• a(n) = 2^n*binomial(2*(n+1), n).at n=8A245391