Problem 53730. Easy Sequences 57: "Pretty-gorean" Triangles?

Created by Ramon Villamangca
Appears in Easy Sequences Volume VII

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A positive integer x is called a regular number, if and only if there exist a non-negative integer k, such that .  For some reason, such a number is also refered to as an ugly number. Below are the first few regular numbers:
                            
Pythagorean triangles are right triangles with all sides having integer lengths. Write a program that counts all Pythagorean triangles whose areas are non-regular numbers and with no sides greater than a given limit s.
Below is the list of all Pythagorean triangles with non-regular areas and with all sides :
                            
Therefore, for , your program output should be . 

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Last Solution submitted on Aug 23, 2023

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GeeTwo on 29 Jun 2023

Same issue as David and William, getting the same values. It appears they both solved the problem. Was it a real solution or a hack, and if real, any clues?

GeeTwo on 23 Aug 2023

William's, David's, and my solutions all have total hacks to fit Ramon's solution. I'm going to dig a bit to try to figure out which is correct.; identify the 75 and 134 solutions everybody but Ramon finds and see if they're legit.

GeeTwo on 23 Aug 2023

The problem is round off in Ramon's search for ugly Pythagorean triangles. For 2^27, he finds 115 solutions with x=1 and y=z, one with x=2 and y=z, and 17 solutions with x and y even and z odd., none of which can be Pythagorean triples.

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Problem 53730. Easy Sequences 57: "Pretty-gorean" Triangles?

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Problem 53730. Easy Sequences 57: "Pretty-gorean" Triangles?

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Last 200 Solutions

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Problem Recent Solvers4

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