3141826

Appears in sequences

• a(n) = Sum_{k <= n/2 } binomial(n-2k, 3k+1).at n=30A137357
• Expansion of 1/(1 - x^3/(1-x)^5).at n=19A369804
• a(n) = Sum_{k=0..floor(2*n/3)} binomial(2*k,2*n-3*k).at n=23A392428