3780721

Appears in sequences

• Expansion of e.g.f. exp(x) / (1 - x^3).at n=10A330044
• a(n) = (3*n+1)! * Sum_{k=0..n} 1 / (3*k+1)!.at n=3A337725
• a(n) = n! * Sum_{k=0..floor((n-1)/3)} 1 / (3*k+1)!.at n=10A349088