a(n) = Product_{i=2..n} (prime(i) - 2).
A059861
a(n) = Product_{i=2..n} (prime(i) - 2).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =15a(4) =135a(5) =1485a(6) =22275a(7) =378675a(8) =7952175a(9) =214708725a(10) =6226553025a(11) =217929355875
External references
- oeis: A059861