# Problem 506: Clock sequence Consider the infinite repeating sequence of digits: 1234321234321234321... Amazingly, you can break this sequence of digits into a sequence of integers such that the sum of the digits in the n'th value is n. The sequence goes as follows: 1, 2, 3, 4, 32, 123, 43, 2123, 432, 1234, 32123, ... Let vn be the n'th value in this sequence. For example, v2 = 2, v5 = 32 and v11 = 32123. Let S(n) be v1 + v2 + ... + vn. For example, S(11) = 36120, and S(1000) mod 123454321 = 18232686. Find S(1014) mod 123454321.