2882061

Appears in sequences

• E.g.f.: d/dx Series_Reversion( Sum_{n>=0} (-x)^(3*n)/(3*n)! - exp(-x) ).at n=8A199670
• a(n) = Sum_{k=0..floor(n/3)} binomial(2*n-3*k-2,n-3*k).at n=13A371871