[seqfan] Re: invasion of third rate programs
franktaw at netscape.net
Tue Dec 18 18:48:53 CET 2018
is(n) = omega(n)==8 && issquarefree(n) would also work. These (Hugo's or mine) aren't really all that slow; only a small fraction of the values of n are factored twice, and the rest is negligible.
Franklin T. Adams-Watters
From: Hugo Pfoertner <yae9911 at gmail.com>
To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
Sent: Tue, Dec 18, 2018 11:38 am
Subject: [seqfan] Re: invasion of third rate programs
(PARI) is(n)=omega(n)==8 && bigomega(n)==8
slow, but correct.
On Tue, Dec 18, 2018 at 5:51 PM Joerg Arndt <arndt at jjj.de> wrote:
> The Pari code is wrong, giving [256, 384, 576, 640, 864, 896, 960]
> when using select(is,vector(10^3,n,n)).
> I am way too tired to fix, so somebody please do the right thing.
> Best regards, jj
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