800046

Appears in sequences

• a(n) = [ C(2n,n)/n ].at n=12A024498
• Number of orbits of length n under the map whose periodic points are counted by A000984.at n=12A060165
• Erroneous version of A177454.at n=4A078464
• a(n) = (binomial(2*p,p) - 2)/p, where p = prime(n).at n=5A177454