1) Begin by enumerating its cells beginning with 1, through 64, noting that the cells sum to 2080.
2) Arrange the numbered cells such that the numbers within each row, column, and major diagonal sum to 260.
Under this arrangement, the 18 columns, rows, and diagonals sum to 4680 = 18 * 260 = 13 * 360 = 18 * 13 * 20. This number seems to link the Mayan 360-day tun calendar to the Mayan 260-day tzolkin calendar.
3) Convert the numbers into hexagrams (6-line binary figures) , the least-valued hexagram valued having the value one (1).
4) Transform each figure into a yao-number by substituting its lines with the corresponding divination ritual numbers: '6' for YIN lines and '9' for YANG lines, summing the substitutions, then scaling each sum by 4. This step is derived from instructions given in Ta Chuan, and has the effect of:
- "flattening" the hexagram (like a logarithm), which may be regarded as a "stack" of binary exponents
- shifting the range of values from a continuum of [1..64] to [144..216] in discrete intervals of 12
The 18 rows, columns, and diagonals noted above now sum to 1440, and produce a grand sum of 18 * 1440 = 25,920, equal to the duration of a precession cycle.