5857280

Appears in sequences

• a(n) = 2^(n-7)*binomial(n,7). Number of 7D hypercubes in an n-dimensional hypercube.at n=9A054851
• Number of closed walks on C_5 tensor J_2.at n=13A101502
• G.f.: A(x) = 1/(1 - 2*x*[A_1(x)]^(1/2)); A_1(x) = 1/(1 - 4*x*[A_2(x)]^(1/4)); ...; where A_{n-1}(x) = 1/(1 - 2^n*x*[A_{n}(x)]^(1/2^n)) for n>=1 with A_0(x)=A(x).at n=8A137984
• 7-quantum transitions in systems of N >= 7 spin 1/2 particles, in columns by combination indices.at n=25A213349
• a(n) is the number of subsets of {1..n} that contain exactly 4 odd numbers.at n=25A331419