Ok, this is close enough - it's still not the spiral I was
   thinking of, but it's pretty. * It's in an excel file I named
   "double_mersenne_primes.xls", and it's filled with all sorts of
   calculations.* Of course[1]double-mersenne-primese - it's Excel,
   it can't do that, especially with a 32Bit version [on my 64bit
   macine, which still wouldn't be big enough]. But I was looking
   for patterns 'nearby' and anyway, this chart jumped up and
   surprised me.* I don't remember what it means. It's from Oct
   2013 when I was all into this stuff.**** Yeah, I was sure I
   found something new.* Hard not to get excited when you see
   pretty charts pop up. But the more I researched at the time,
   everything I thought was 'new', some other guy already did.* I'm
   looking to do something 'new' and the world of pure number
   theory has enough entrants; they didn't need me.

References

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