7 is the only real amount D for which the equation 2n − D = x2 has much more than two remedies for n and x natural. In particular, the equation 2n − seven = x2 is known as the Ramanujan–Nagell equation. We are incorporating extra continuously. If there are https://shaneifaum.activosblog.com/36619360/7-day-pill-organizers-fundamentals-explained