[seqfan] A158714
israel at math.ubc.ca
israel at math.ubc.ca
Fri May 9 19:53:08 CEST 2014
Title is A158714 Primes p such that p1=Ceiling[p/2]+p is prime and
p2=Floor[p1/2]+p is prime. The data given match not this, but rather Primes
p such that p1=Ceiling[p/2]+p is prime and p2=Floor[p1/2]+p1 is prime.
For example, A158714 is given as 19.
ceil(19/2) + 19 = 29 is prime.
floor(29/2) + 19 = 33 is composite, but floor(29/2) + 29 = 43 is prime.
So: change the definition to match the data, or the data to match the
definition?
Robert Israel
University of British Columbia and D-Wave Systems
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