a(n) is smallest number such that a(n)^2 + 1 is divisible by 61^n.
A218716
a(n) is smallest number such that a(n)^2 + 1 is divisible by 61^n.
Terms
- a(0) =0a(1) =11a(2) =682a(3) =51412a(4) =6304056a(5) =144762466a(6) =9435321777a(7) =988322434636
External references
- oeis: A218716