1059380

Appears in sequences

• Positive integers of the form n(n+1)(n+2)(n+3)(n+4)/(n+(n+1)+(n+2)+(n+3)+(n+4)) that are a multiple of n.at n=27A032794
• One half of binomial coefficients C(2*n-4,5).at n=22A053132
• a(n) = 3*binomial(8*n+3,n)/(8*n+3).at n=6A234462
• Number of 2-orbits of the cyclic group C_4 for a bi-colored square n X n grid with n squares of one color.at n=9A276451
• Square table where T(n,k) = binomial(n*(n+k), k) * n/(n+k), for n>=1, k>=0, as read by antidiagonals.at n=49A299427
• a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/7)} a(7*k) * a(n-1-7*k).at n=44A386396