33738060600domain: NAppears in sequencesa(n) = 15*(n+1)*binomial(n+2,15)/2.at n=15A027788a(n) = lcm(n^2, swinging_factorial(n)).at n=29A181860a(n) = binomial(2*n,n) * (2*n+1)^2.at n=14A294486