fact: Definition p4 (n_ : int) : rat := let n : rat := n_%:Q in rat_of_Z 12 * n^4 + rat_of_Z 96 * n^3 + rat_of_Z 283 * n^2 + rat_of_Z 364 * n + rat_of_Z 173.
imports: BinInt mathcomp(all_ssreflect all_algebra) tactics rat_of_Z