freeCodeCamp/problem-377-sum-of-digits-experience-13.english.md at 92377cf71af628cb5ea6b28ff7d6fa66a9b52449

mrugesh 22afc2a0ca feat(learn): python certification projects (#38216 )

Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Co-authored-by: Kristofer Koishigawa <scissorsneedfoodtoo@gmail.com>
Co-authored-by: Beau Carnes <beaucarnes@gmail.com>

2020-05-27 13:19:08 +05:30

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id, challengeType, isHidden, title, forumTopicId

id	challengeType	isHidden	title	forumTopicId
5900f4e51000cf542c50fff8	5	false	Problem 377: Sum of digits, experience 13	302039

Description

There are 16 positive integers that do not have a zero in their digits and that have a digital sum equal to 5, namely: 5, 14, 23, 32, 41, 113, 122, 131, 212, 221, 311, 1112, 1121, 1211, 2111 and 11111. Their sum is 17891.

Let f(n) be the sum of all positive integers that do not have a zero in their digits and have a digital sum equal to n.

Find \displaystyle \sum_{i=1}^{17} f(13^i). Give the last 9 digits as your answer.

Instructions

Tests

tests:
  - text: <code>euler377()</code> should return 732385277.
    testString: assert.strictEqual(euler377(), 732385277);

Challenge Seed

function euler377() {
  // Good luck!
  return true;
}

euler377();

Solution

// solution required

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