961 B
961 B
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
5900f4041000cf542c50ff17 | Problem 152: Writing one half as a sum of inverse squares | 5 | 301783 | problem-152-writing-one-half-as-a-sum-of-inverse-squares |
--description--
There are several ways to write the number 1/2 as a sum of inverse squares using distinct integers.
For instance, the numbers {2,3,4,5,7,12,15,20,28,35} can be used:
In fact, only using integers between 2 and 45 inclusive, there are exactly three ways to do it, the remaining two being: {2,3,4,6,7,9,10,20,28,35,36,45} and {2,3,4,6,7,9,12,15,28,30,35,36,45}. How many ways are there to write the number 1/2 as a sum of inverse squares using distinct integers between 2 and 80 inclusive?
--hints--
euler152()
should return 301.
assert.strictEqual(euler152(), 301);
--seed--
--seed-contents--
function euler152() {
return true;
}
euler152();
--solutions--
// solution required