OFFSET
1,1
COMMENTS
Refer to Cairo tiling by Stick Cross Method (see details in the links). Each pentagon has four sides of equal length and one side which is either shorter or longer. All sides can be taken to have integral lengths related to primitive Pythagorean triples A103606.
If Pythagorean triple = (a, b, c), the 5-tuple is (s1, s2, s3, s4, s5) with s1 = s2 = s3 = s4 = c and s5 = 2*(b-a). See illustration in the links.
LINKS
David Bailey's World of Escher-like Tessellations, Stick Cross Method
Kival Ngaokrajang, Illustration of initial terms, Excel calculation sheet
Wikipedia, Cairo pentagonal tiling
EXAMPLE
List begins:
5, 5, 5, 5, 2,
13, 13, 13, 13, 14,
17, 17, 17, 17, 14,
25, 25, 25, 25, 34,
29, 29, 29, 29, 2,
...
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Kival Ngaokrajang, Apr 09 2016
STATUS
approved