79342611480domain: NAppears in sequencesa(n) = 4*(2n+1)!/n!^2.at n=16A002011Expansion of 1/(1-4*x)^(7/2).at n=14A020918Expansion of 1/(1-4*x)^(9/2).at n=13A020920Reduced denominators of the (2n-1)th raw moment of the distribution of line lengths of points picked at random in a unit square.at n=14A103305