A Skolem sequence of order is a sequence of integers such that
1. For every , there exist exactly two elements such that , and
2. If with , then .
A Skolem sequence of order is a sequence of integers such that
1. For every , there exist exactly two elements such that , and
2. If with , then .
Weisstein, Eric W. "Skolem Sequence." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/SkolemSequence.html