Acronym ...
Name hyperbolic trigonal-horocyclic tiling,
hyperbolic triapeirogonal tiling
 
Circumradius sqrt[-1] = 1 i
Vertex figure [(3,∞)2]
External
links
wikipedia  

Incidence matrix according to Dynkin symbol

o3x∞o   (N,M → ∞)

. . . | 3NM |   4 |   2  2
------+-----+-----+-------
. x . |   2 | 6NM |   1  1
------+-----+-----+-------
o3x . |   3 |   3 | 2NM  *
. x∞o |   M |   M |   * 6N

x3o3x∞*a   (N,M → ∞)

. . .    | 3NM |   2   2 |  1  2  1
---------+-----+---------+---------
x . .    |   2 | 3NM   * |  1  1  0
. . x    |   2 |   * 3NM |  0  1  1
---------+-----+---------+---------
x3o .    |   3 |   3   0 | NM  *  *
x . x8*a |  2M |   M   M |  * 3N  *
. o3x    |   3 |   0   3 |  *  * NM

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