A072916 needs correction
Graeme McRae
g_m at mcraefamily.com
Thu Sep 22 20:39:41 CEST 2005
It is interesting that the comment in sequence A072916 explicitly states, "First 12 Floor[Prime[m]/m]'s are: 2, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3 Remove first term and count ones, twos etc and get the sequence: 3,7,19.." so I wonder: why remove the first term? Is this sequence looking for the largest number of *consecutive* n's for each n? If so, then other elements besides just the first must also be removed, and the sequence becomes 3, 7, 19, 38, 108, 253, 609, ...
--Graeme
----- Original Message -----
From: David Wilson
To: Vladeta Jovovic
Cc: Sequence Fans
Sent: Wednesday, September 14, 2005 11:50 AM
Subject: A072916 needs correction
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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://list.seqfan.eu/pipermail/seqfan/attachments/20050922/5ce833f2/attachment-0001.htm>
More information about the SeqFan
mailing list