315526

Appears in sequences

• Number of (n+2)X4 binary arrays avoiding patterns 001 and 100 in rows, columns and nw-to-se diagonals.at n=5A202585
• Number of (n+2)X8 binary arrays avoiding patterns 001 and 100 in rows, columns and nw-to-se diagonals.at n=1A202589
• T(n,k)=Number of (n+2)X(k+2) binary arrays avoiding patterns 001 and 100 in rows, columns and nw-to-se diagonals.at n=22A202591
• T(n,k)=Number of (n+2)X(k+2) binary arrays avoiding patterns 001 and 100 in rows, columns and nw-to-se diagonals.at n=26A202591
• a(n) = (-1)^n + Sum_{k=0..floor((n-1)/2)} a(k) * a(n-2*k-1).at n=41A351973