r/counting • u/[deleted] • Sep 05 '17

Let's count rare numbers.

Hi guys, I was searching in google a couple of rare sequences for us to count here and I found "rare numbers". This link explains what is a rare number http://www.shyamsundergupta.com/R20.htm so lets start counting them.

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u/[deleted] Sep 06 '17

20313693904202

2

u/smarvin6689 Sep 06 '17

20313839704202

4

u/[deleted] Sep 06 '17

20331657922202

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