Is there a proof that ∏(√n) increments only when n is a centered polygonal number with a prime index?(adsbygoogle = window.adsbygoogle || []).push({});

∏(n) is the prime counting function

n=p^2-p+1 for a prime p

3, 7, 21, 43, 111, 157, 273, 343, 507, 813, 931, 1333....

http://oeis.org/A119959

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# Proof that ∏(√n) increments when n is a centered polygonal number with a prime index.

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