a(n) = A118478(n)*(A118478(n)+1) divided by the product of the first n primes.
A215021
a(n) = A118478(n)*(A118478(n)+1) divided by the product of the first n primes.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =19a(5) =17a(6) =1a(7) =409a(8) =604a(9) =82a(10) =20951a(11) =229931a(12) =411012a(13) =39080794a(14) =4382914408a(15) =6345486566a(16) =45119290746a(17) =581075656330a(18) =8672770990
External references
- oeis: A215021