8252000domain: NAppears in sequencesGeneralized harmonic number H(n,5) = Sum_{k=1..n} 1/k^5 multiplied by (n!)^5.at n=4A099827Square array A(n,k), n>=0, k>=0, read by antidiagonals: A(n,k) = (n!)^k * Sum_{i=1..n} 1/i^k.at n=49A291556