12446784

Appears in sequences

• Number of (n+2)X5 binary arrays avoiding patterns 000 and 010 in rows, columns and nw-to-se diagonals.at n=5A202487
• Number of (n+2)X8 binary arrays avoiding patterns 000 and 010 in rows, columns and nw-to-se diagonals.at n=2A202490
• T(n,k)=Number of (n+2)X(k+2) binary arrays avoiding patterns 000 and 010 in rows, columns and nw-to-se diagonals.at n=30A202492
• Number of 3 X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 1 vertically.at n=17A207694
• a(n) = Product_{d|n} (A069934(n) / sigma(d)) where A069934(n) = lcm_{d|n} sigma(d).at n=11A334471
• a(n) = sigma_3(n)^2.at n=14A356534
• Powers k^m, m > 1, where k is an Achilles number such that A053669(k) < A006530(k).at n=18A389341
• Powers k^m, m > 1, where k is an Achilles number that is not a product of primorials.at n=24A389814
• Squares of Achilles numbers.at n=30A390435
• Powers k^m, m > 1, where k is an even Achilles number.at n=28A391376