a(n) is smallest number such that a(n)^2 + 1 is divisible by 17^n.
A218710
a(n) is smallest number such that a(n)^2 + 1 is divisible by 17^n.
Terms
- a(0) =0a(1) =4a(2) =38a(3) =1985a(4) =27493a(5) =390112a(6) =390112a(7) =96940388a(8) =3379649772a(9) =24306922095a(10) =450044583893
External references
- oeis: A218710