Visualisation
Hailstone Sequences
animated trajectories · log scale
Angle Walk
turtle bloom · odd/even turns
Stopping-Time Grid
colour every n by steps-to-1
Stopping-Time Chart
scatter: n vs steps
Record Setters
n with longest stopping times
Turn angle
Odd step (3n+1)
15°
30°
45°
Even step (n/2)
10°
20°
40°
Speed
×1
×5
×20
⏸ Pause
↺ Reset
Start
n = 27
: 111 steps,
peak = 9232 ≈ 342n.
Start
n = 6171
: 261 steps,
peak ≈ 975 400.
No counter-example has
ever been found.
mode =
Hailstone
n =
—
steps =
—
peak =
—
peak/n =
—
total run =
0