a(n) = U(n, 2*n), where U(n, x) is the Chebyshev polynomial of the second kind.
A349075
a(n) = U(n, 2*n), where U(n, x) is the Chebyshev polynomial of the second kind.
Terms
- a(0) =1a(1) =4a(2) =63a(3) =1704a(4) =64769a(5) =3168060a(6) =189447551a(7) =13389885712
External references
- oeis: A349075