a(n) = (T(n,n+1) - 1)/n^3 for n >= 1, where T(n,x) is the n-th Chebyshev polynomial of the first kind.

A370259

a(n) = (T(n,n+1) - 1)/n^3 for n >= 1, where T(n,x) is the n-th Chebyshev polynomial of the first kind.

Terms

    a(0) =1a(1) =2a(2) =9a(3) =75a(4) =961a(5) =16900a(6) =380689a(7) =10498005a(8) =343323841a(9) =13007560326a(10) =560789801881

External references