The phrase "and then executes a" is correct and usable in written English.
It can be used in contexts where you are describing a sequence of actions, particularly in programming or procedural writing.
Example: "The program first collects the data, and then executes a series of calculations to analyze the results."
Alternatives: "and subsequently carries out a" or "and then performs a".
The system identifies a suitable spot and then executes a near-perfect reversing maneuver while the driver operates the brake.
The aggressive fill-ins -- slang for when a graffiti writer sprays a layer of paint on top of an existing work and then executes a new design there -- occurred at a site that has been a piece of downtown art history ever since the late Keith Haring created an unauthorized mural there in 1982.
In "Hanna" the teenage heroine, raised in arctic isolation by her father, experiences her first kiss and then executes a swift, complex series of martial arts moves on her unsuspecting beau, who winds up flat on his back, gasping for breath.
The trick identified Tor users on the internet and then executes an attack against their Firefox web browser.
Ireland counter-attacked promisingly with hooker Rory Best floating a long pass to Keith Earls but Foden made the tackle and then executed a vital turnover.
He'd watched as the ship slowed down, tacked west, and then executed a fishhook turn and steamed due north to buy time.
The launch approached the shore and then executed a neat, sharp turn that swung the towrope and the ferry raft at its end into an unfurling arc that ended with the front of the raft wedged against the shore.
We reconsider an old approach in which a small probe obtains significant solar-system escape speeds by "dropping" deep into the Sun's gravitational potential well and then executing a ΔV maneuver at perihelion.
In this article, we examine the United States Congress and its difficult bargainers and how the congressional teams decide on bargaining platforms and then execute a negotiation strategy based upon predetermined objectives and well-thought through best alternatives to a negotiated agreement with the other side.
The former World Player of the Year gave two tantalising glimpses of his unique talent, scoring Atletico's only goal in the 3-1 defeat with an exquisite free-kick and then executing a cheeky flick of the ball over an opponent.
It is the story of how a brilliant and brave woman escapes death at the hands of a monster – King Shahryar, who has been marrying, deflowering and then executing a virgin every night for three years – by telling him stories every night for the next two and three-quarter years and, improbably, civilising him.
