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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:42AA1of2 GHM

Order: 19

Horizontal side: 42 Vertical side: 42

Elements: 1, 1√2, 2, 2√2, 3, 3√2, 4√2, 6, 5√2, 8, 7√2, 10, 10√2, 11√2, 16, 13√2, 16√2, 26, 21√2.

Code: 265 0 16 214 21 21 116 31 31 103 31 21 72 38 24 83 38 16 42 42 20 54 26 16 26 29 19 106 32 10 33 29 16 25 29 17 15 29 16 14 30 16 165 0 0 164 16 0 36 29 13 67 32 16 130 29 13

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)

26
21√2
11√2
10
7√2
8
4√2
5√2
2√2
10√2
3
2
1
1√2
16
16√2
3√2
6
13√2