a(n) = (1/sqrt(n^2+1)) * T_{2*n+1}(sqrt(n^2+1)) where T_{n}(x) is a Chebyshev polynomial of the first kind.
A323012
a(n) = (1/sqrt(n^2+1)) * T_{2*n+1}(sqrt(n^2+1)) where T_{n}(x) is a Chebyshev polynomial of the first kind.
Terms
- a(0) =1a(1) =5a(2) =305a(3) =53353a(4) =18674305a(5) =10928351501
External references
- oeis: A323012