R3,I5,S2-3,B3,N+

B3 cross rules typically cannot escape their bounding box but this does not apply to integer rules. The rule has 4 natural speeds namely c/2o, c/4d, c/13o and c/22o.

Catagolue census

Known Periods:
2
3
4
5
6
7
8
9
10
11
14
15
16
40