1419193

Appears in sequences

• a(n) = 2*a(n-1) + 5*a(n-2), with a(0) = a(1) = 1.at n=12A002533
• a(n) = 5^n * T(n,7/5) where T is the Chebyshev polynomial of the first kind.at n=6A099141
• a(n) = Sum_{k=0..n} n^k * binomial(2*n,2*k).at n=6A333990