50964

Appears in sequences

• Number of necklaces with n beads of 2 colors, allowing turning over (these are also called bracelets).at n=21A000029
• Powers of fourth root of 18 rounded down.at n=15A018096
• Numbers k such that 4^k*(2^k - 1) + 1 is a prime.at n=11A098856
• a(n) = 6*n*(9*n-5).at n=31A277984
• Table read by antidiagonals: T(n,k) is the number of tilings of the n X k torus up to 180-degree rotation by two tiles that are both fixed under 180-degree rotation.at n=38A368307
• Table read by antidiagonals: T(n,k) is the number of tilings of the n X k torus up to 180-degree rotation by two tiles that are both fixed under 180-degree rotation.at n=42A368307