2359500

Appears in sequences

• Ninth convolution of A001045(n+1) (generalized (1,2)-Fibonacci), n>=0, with itself.at n=9A073379
• a(n) = 2^n * Sum_{k=0..n} binomial(k + n, k) * binomial(2*n - k, n) * (-1/2)^k.at n=9A371399