a(n) = the number of values of k <= 10^n such that sqrt(k*(k+1)*(k+2)*(k+3)+1) is prime.
A115366
a(n) = the number of values of k <= 10^n such that sqrt(k*(k+1)*(k+2)*(k+3)+1) is prime.
Terms
- a(0) =1a(1) =9a(2) =50a(3) =313a(4) =2188a(5) =17075a(6) =139484a(7) =1179766a(8) =10220078a(9) =90159466a(10) =806928985a(11) =7302511765
External references
- oeis: A115366