314820domain: NAppears in sequencesa(n) = (2^(n-1)/(2n)!)*Product_{k=1..n} q(k) where q(n) is the denominator of B(2n), the 2n-th Bernoulli number.at n=25A069267Numbers x such that 0 < |x^11 - y^4| < x^(29/4) for some number y.at n=7A173360