476860000285domain: NAppears in sequencesa(n) = Sum_{k=0..n} binomial(n,k)^7 * (1 - 7*k*(H(k) - H(n-k))), where H(n) is the n-th harmonic number.at n=8A371882a(n) = Sum_{k = 0..n} binomial(n, k)^2*binomial(n+k, k)*A108625(n, n-k).at n=8A376462