561792

Appears in sequences

• a(n) = Product_{k=1..n} (16 - 4/k).at n=5A216702
• Square array read by antidiagonals downwards: super Patalan numbers of order 4.at n=20A248325
• Triangle T(n, k) read by rows: Row n gives the coefficients of the even powers in Product_{t=1..n}(2*x - (2*t - 1))*Product_{t=1..n}(2*x + (2*t - 1)).at n=17A380570