Interesting...it's worth noting that Serge offered (and still sort of does) several sequencers of various lengths...including some odd-numbered lengths like 7 or 5. Most of the time, these come in handy for making sequenced transpositions, with the sequencer being clocked by a divided clock signal to slow the "odd" sequencer down for that purpose. However, they can also provide things such as envelope timing variations to change articulations, sequence-specific modulation, and so forth.