[seqfan] Re: a(n) = p(3n) - p(2n) - p(n)

Neil Fernandez primeness at borve.org
Thu Jul 18 21:00:28 CEST 2013


Hi,

I get 2, 31, 911, 929, 941, 997, 1013, 4273, 4289 for this sequence, but
this is not the same as the sequence defined in the Subject: line,.

If the word "cube" is replaced with "5th power", we get:

2, 82171, 326189,

Neil

In message <1374168640.141283.12878.52550 at saddam4.rambler.ru>,
=?koi8-r?B?wNLJyiDHxdLB08nNz9c=?= <2stepan at rambler.ru> writes

>Primes p(n) such that p(3n) - p(2n) - p(n) is a cube; 2, 3, 31, 2281,... 
>
>What is the next one ?

-- 
Neil Fernandez



More information about the SeqFan mailing list