24620

Appears in sequences

• Column 4 of triangle A128545; a(n) is the coefficient of q^(4n+16) in the central q-binomial coefficient [2n+8,n+4].at n=8A128554
• a(n) = Sum_{k=0..n} C(n+k,k)*C(n+k,n-k).at n=6A137644
• Twice partition numbers.at n=34A139582
• Number of length n+3 0..1 arrays with at most two downsteps in every n consecutive neighbor pairs.at n=16A256818