a(n) = least positive integer k such that k^2+3 is divisible by at least n distinct primes.
A138769
a(n) = least positive integer k such that k^2+3 is divisible by at least n distinct primes.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =33a(4) =201a(5) =1125a(6) =5259a(7) =98481a(8) =1176579a(9) =4970985a(10) =83471355a(11) =607500315a(12) =20298622815a(13) =302065005093
External references
- oeis: A138769