Challenge-364-The-Ducci-Sequence
Github page for:
Challenge #364 The Ducci Sequence: https://www.reddit.com/r/dailyprogrammer/comments/8sjcl0/20180620_challenge_364_intermediate_the_ducci
For HuntFunc's October meeting: https://groups.google.com/forum/#!topic/huntfunc/8FwRcJ9CMmI