zak08 (zak08) wrote,
zak08
zak08

Sums of each ten terms of A033308

Take A033308 Decimal expansion of Copeland-Erdos constant:concatenate primes:
2,3,5,7,1,1,1,3,1,7,1,9,2,3,2,9,3,1,3,7,4,1,4,3,4,7,5,3,5,9,6,1,6,7,7,1,7,3,7,9,8,3,8,9,9,7,1,0,1,

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?
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