57699

Appears in sequences

• Number of (n+2)X4 binary arrays avoiding patterns 000 and 101 in rows and columns.at n=5A203085
• Number of (n+2)X8 binary arrays avoiding patterns 000 and 101 in rows and columns.at n=1A203089
• T(n,k)=Number of (n+2)X(k+2) binary arrays avoiding patterns 000 and 101 in rows and columns.at n=22A203091
• T(n,k)=Number of (n+2)X(k+2) binary arrays avoiding patterns 000 and 101 in rows and columns.at n=26A203091
• a(n) = Sum_{k=0..floor(n/4)} binomial(n,k) * binomial(n-3*k,k).at n=17A383523
• Odd numbers k such that A173557(k) = A173557(sigma(k)), where A173557(n) is multiplicative with a(p^e) = p-1 and sigma is the sum of divisors function.at n=46A387159