Spiral Ride

This is the 189th episode of Numberstairs.

Plot
Lizzy, two Oggys, Gaty, Emily, Butter, Eight-Diego, Celtic, Cure, Duckty-Four, Blueblock and NS-89 are riding on a spiral.

Facts
The numbers up there (0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55 and 89) may seem random, but not.