freeCodeCamp

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id	challengeType	title	forumTopicId
5900f41a1000cf542c50ff2c	5	Problem 173: Using up to one million tiles how many different "hollow" square laminae can be formed?	301808

Description

We shall define a square lamina to be a square outline with a square "hole" so that the shape possesses vertical and horizontal symmetry. For example, using exactly thirty-two square tiles we can form two different square laminae:

With one-hundred tiles, and not necessarily using all of the tiles at one time, it is possible to form forty-one different square laminae. Using up to one million tiles how many different square laminae can be formed?

Instructions

Tests

tests:
  - text: <code>euler173()</code> should return 1572729.
    testString: assert.strictEqual(euler173(), 1572729);

Challenge Seed

function euler173() {
  // Good luck!
  return true;
}

euler173();

Solution

// solution required

1.1 KiB Raw Blame History