1.1 KiB
1.1 KiB
id | challengeType | title | forumTopicId |
---|---|---|---|
5900f52a1000cf542c51003c | 5 | Problem 445: Retractions A | 302117 |
Description
Find ∑ R(c) for c=C(10 000 000,k), and 1 ≤k≤ 9 999 999. Give your answer modulo 1 000 000 007.
Instructions
Tests
tests:
- text: <code>euler445()</code> should return 659104042.
testString: assert.strictEqual(euler445(), 659104042);
Challenge Seed
function euler445() {
return true;
}
euler445();
Solution
// solution required