a(n) is twice the square of the product of the first n primes each decreased by one.
A307124
a(n) is twice the square of the product of the first n primes each decreased by one.
Terms
- a(0) =2a(1) =8a(2) =128a(3) =4608a(4) =460800a(5) =66355200a(6) =16986931200
External references
- oeis: A307124