Current location - Plastic Surgery and Aesthetics Network - Plastic surgery and medical aesthetics - Greeks often put pebbles on the beach to study numbers. For example, they studied 1, 3, 6, 10, …, because these numbers can
Greeks often put pebbles on the beach to study numbers. For example, they studied 1, 3, 6, 10, …, because these numbers can
C

Solution: the general name of a series of numbers composed of triangle numbers that can be obtained by graphics.

Similarly, we can get the general term =,

Then d can be given by = (n∈N+),

(n+ 1)=289 and? (n+ 1)= 1024 has no positive integer solution, so C.