a(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.
A371882
a(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.
Terms
- a(0) =1a(1) =-5a(2) =109a(3) =-3317a(4) =121501a(5) =-4954505a(6) =216867925a(7) =-9981053045a(8) =476860000285
External references
- oeis: A371882