545813094

Appears in sequences

• Number of compositions of 5*n into parts 2 and 5.at n=20A369840
• Expansion of (1 + x)^2/(1 - x^2*(1 + x)^3).at n=32A375317
• a(n) = Sum_{k=0..floor(2*n/5)} binomial(2*n-3*k,2*k).at n=25A391541