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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:54AH GHM

Order: 18

Horizontal side: 54 Vertical side: 54

Elements: 1, 1√2, 7, 8, 6√2, 9, 7√2, 8√2, 12, 13, 16, 12√2, 18, 24, 17√2, 18√2, 23√2, 36.

Code: 365 0 18 234 23 31 163 46 38 82 54 46 81 54 54 176 37 29 70 30 38 71 37 38 97 37 38 131 36 31 17 36 31 16 36 30 62 42 24 243 42 0 122 54 12 185 0 0 184 18 0 123 54 0

The properties below may precede order:side in a tiling's title:

Credit for Discovery

Just three people are credited with the discovery of Primitive Perfects:

Geoffrey H. Morley (GHM, England)

Jasper D. Skinner, II (JDS, United States)

William T. Tutte (WTT, Canada, 1917-2002) (15:44AI, 17:136AJ and 19:56AJ only)

36
23√2
16
8√2
8
17√2
7√2
7
9
13
1
1√2
6√2
24
12√2
18
18√2
12