a(n) = S(5,2*n-1)/S(1,2*n-1), where S(r,n) = Sum_{k = 0..floor(n/2)} ( binomial(n,k) - binomial(n,k-1) )^r.
A361889
a(n) = S(5,2*n-1)/S(1,2*n-1), where S(r,n) = Sum_{k = 0..floor(n/2)} ( binomial(n,k) - binomial(n,k-1) )^r.
Terms
- a(0) =1a(1) =11a(2) =415a(3) =30955a(4) =3173626a(5) =386672861a(6) =52846226091
External references
- oeis: A361889