7818464

Appears in sequences

• Number of binary words of length n in which the ones occur only in blocks of length at least 4.at n=39A005253
• Number of compositions of 5*n into parts 2 and 5.at n=16A369840
• Expansion of (1 + x)/(1 - x^2*(1 + x)^3).at n=26A375315
• a(n) = Sum_{k=0..floor(2*n/5)} binomial(2*n-3*k,2*k).at n=20A391541