Editing King Wen sequence (section)

== Explanation ==
Over the centuries there were many attempts to explain this sequence. Some basic elements are obvious: each symbol is paired with an "upside-down" neighbor, except for 1, 27, 29, and 61 which are "vertically" symmetrical and paired with "inversed" neighbors.

There have been recent attempts to apply [[Combinatorics|mathematical combinatorics]] in explaining the logic behind the King Wen sequence, for example Richard S. Cook's proposal.<ref name=cook>{{cite web|url=http://www.biroco.com/yijing/images/kwscook.jpg |author=Cook, Richard S. |title=《周易》卦序詮解 (Zhou yi guaxu quanjie)|format=JPEG Image, 1024x793 |year=2006 |accessdate=22 May 2010 }} STEDT Monograph 5: ''[http://stedt.berkeley.edu/html/publications.html#mng5 Classical Chinese Combinatorics]: Derivation of the Book of Changes Hexagram Sequence.'' 660 pages. {{ISBN|0-944613-44-6}}. OCLC 77009740.</ref>