a(0) = 1; for n>1, a(n) is the denominator of b(n) = Product_{i=1..n} (prime(i)^2 + 1)/(prime(i)^2 - 1).
A285603
a(0) = 1; for n>1, a(n) is the denominator of b(n) = Product_{i=1..n} (prime(i)^2 + 1)/(prime(i)^2 - 1).
Terms
- a(0) =1a(1) =3a(2) =12a(3) =144a(4) =3456a(5) =41472a(6) =3483648a(7) =501645312a(8) =18059231232
External references
- oeis: A285603