40126

Appears in sequences

• a(n) = Sum_{k=0..floor(n/6)} binomial(n-3k,3k).at n=25A100134
• Number of (n+2) X 8 binary arrays avoiding patterns 001 and 110 in rows, columns and nw-to-se diagonals.at n=7A202445
• Expansion of (1 + x)/(1 - x^3*(1 + x)^3).at n=24A375319