[seqfan] Sums of each ten terms of A033308

zak seidov zakseidov at yahoo.com
Sat Jan 9 08:53:04 CET 2010

Take A033308 Decimal expansion of Copeland-Erdos constant:concatenate primes:


Partition it in groups of 10 and write down sums of each group:
p10 = 31,40,45,54,47,23,29,35,44,41,51,24,38,35,51,38,26,38,53,...
Graph of p10 shows some misterious (quasi-)periodicity of length about 50:
 Is it real? Any explanation?

Thanks, Zak



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