17551820

Appears in sequences

• a(n) = 5*(n+1)*binomial(n+2,10).at n=10A027783
• a(n) = 11*(n+1)*binomial(n+2,11)/2.at n=9A027784
• a(n) = lcm(n^2, swinging_factorial(n)).at n=19A181860
• a(n) = binomial(2*n,n) * (2*n+1)^2.at n=9A294486