proposition: Lemma nat_seq_succ' : forall o k, nat_seq o (1+k) = o :: (nat_seq (o+1) k).
proof: Proof. Proof using. intros. simpl. fequals_rec. math. Qed.
imports: Coq.Classes.Morphisms TLC(LibTactics LibLogic LibReflect LibOperation LibProd LibOption LibNat LibInt LibWf LibMonoid LibRelation)