a(n) = Product_{1 <= i < j <= n} (A018252(i) + A018252(j)); A018252 = nonprime numbers.
A203527
a(n) = Product_{1 <= i < j <= n} (A018252(i) + A018252(j)); A018252 = nonprime numbers.
Terms
- a(0) =1a(1) =5a(2) =350a(3) =529200a(4) =17542980000
External references
- oeis: A203527