a(n) = (3*n)!*(10*n)!/((2*n)!*(5*n)!*(6*n)!).
A364402
a(n) = (3*n)!*(10*n)!/((2*n)!*(5*n)!*(6*n)!).
Terms
- a(0) =1a(1) =126a(2) =41990a(3) =15967980a(4) =6421422150
External references
- oeis: A364402
A364402
a(n) = (3*n)!*(10*n)!/((2*n)!*(5*n)!*(6*n)!).