Bell number

[Hans Havermann]

> You can see all figures and kanjis and names of 52 cases which is 5-th
> term of Bell number.

How come the figures for 1 and 54 are excluded? See:

http://spectacle.berkeley.edu/~fiorillo/7genjimon.html

> Yes, this is because the old Japanese in the 1700's used incense 
> diagrams
> based on arrangements of different or same sticks of incense to label
> the 52 inner chapters of the Genji Monogatari (Tale of Genji) that was
> originally written by Lady Shikibo Murasaki around 1002 A.D.

Same here. "Inner" to exclude two of the chapters. Why?