Source: wikibot/sum-free-sequence
= Sum-free sequence
{wiki=Sum-free_sequence}
A **sum-free sequence** is a sequence of integers such that no two elements in the sequence sum to another element in the same sequence. In other words, if \\( a \\) and \\( b \\) are elements of the sequence, then \\( a + b \\) should not be an element of the sequence.