a(n) = Sum_{k=0..n} 5^k * binomial(n,k) * binomial(n+1,k).
A388061
a(n) = Sum_{k=0..n} 5^k * binomial(n,k) * binomial(n+1,k).
Terms
- a(0) =1a(1) =11a(2) =106a(3) =1011a(4) =9726a(5) =94526a(6) =926836a(7) =9153731a(8) =90941686a(9) =907922826a(10) =9101393676a(11) =91551938286a(12) =923659741356
External references
- oeis: A388061