A072916 needs correction

David Wilson davidwwilson at comcast.net
Wed Sep 14 20:50:17 CEST 2005


I submitted the new sequence A112547, in which a(n) counts the k with floor(p(k)/k) = n.

For n = 2, there are 8 primes p(k) with floor(p(k)/k) = 2, namely 2,11,13,17,19,23,29,31.  For some inexplicable reason, A072916 does not count 2 among the primes, which would give a(2) = 8 instead of a(2) = 7.

Because of this error, I did not find A072916 when I looked up 3,8,19,41,...  Had I found it, I would have extended it rather than creating A112547.

I propose that A072916(2) be changed to 8 and the comments accordingly fixed to include 2 as a prime, which it is.
  ----- Original Message ----- 
  From: Vladeta Jovovic 
  To: davidwwilson at comcast.net 
  Sent: Wednesday, September 14, 2005 12:17 PM
  Subject: A112547



  Already in the OEIS as A072916.

  Best regards,

  Vladeta Jovovic
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