725140

Appears in sequences

• a(n) = C(n-2,2)+C(n-5,5)+...+C(n-(3*floor((n-3)/3)+2),3*floor((n-3)/3)+2).at n=31A101551
• Expansion of (1 + x)^2/(1 - x^3*(1 + x)^3).at n=29A375321