IMO 1988 LL FRG17
Show that if n runs through all positive integers, f(n) =
IMO 1988 LL FRG17
Origin: FRG
Problem
Show that if n runs through all positive integers, f(n) = / n + \sqrt 3n + 1/2 runs through all positive integers skipping the terms of the sequence an = n2+2n .