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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:136AD GHM

Order: 18

Horizontal side: 136 Vertical side: 136

Elements: 1√2, 2, 2√2, 4, 4√2, 8, 11√2, 22, 30, 23√2, 38, 30√2, 38√2, 60, 68, 49√2, 76, 68√2.

Code: 765 0 60 684 68 68 683 136 68 81 76 68 42 80 64 304 106 38 303 136 38 43 80 60 22 82 62 23 82 60 12 83 61 230 83 61 607 0 60 116 49 49 227 60 60 490 49 49 384 98 0 383 136 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)

76
68√2
68
8
4√2
30√2
30
4
2√2
2
1√2
23√2
60
11√2
22
49√2
38√2
38