(sum-of-digits of 5^n)/n approximates pi

[Hans Havermann]

> Each n provides a value of (sum-of-digits of 5^n)/n that is closer  
> to pi than the previous value. I'm guessing there aren't many more  
> terms.

I let this run overnight and did get two more terms: {1, 2, 4, 6, 8,  
139, 309, 390, 819, 2868, 6751, 8045, 9414, 15008, 15375, 56839,  
84383, 151286, ...}

(sum-of-digits of 5^151286)/151286 is about 3.141592745.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://list.seqfan.eu/pipermail/seqfan/attachments/20060724/c0e5f307/attachment-0002.htm>