373173528domain: NAppears in sequencesa(n) = 6*(n+1)*binomial(n+2,12).at n=12A027785a(n) = 13*(n+1)*binomial(n+2,13)/2.at n=11A027786a(n) = lcm(n^2, swinging_factorial(n)).at n=23A181860a(n) = binomial(2*n,n) * (2*n+1)^2.at n=11A294486