[seqfan] Re: A119558 -- FIXED
Charles Greathouse
charles.greathouse at case.edu
Mon Feb 27 15:20:31 CET 2012
I wonder if the 2006 preprint ever materialized.
Charles Greathouse
Analyst/Programmer
Case Western Reserve University
On Mon, Feb 27, 2012 at 9:12 AM, Harvey P. Dale <hpd1 at nyu.edu> wrote:
> Please ignore my earlier message on this sequence. I had,
> indeed, misunderstood the definition and a revised Mma program (see
> below) now correctly generates its terms:
>
> RecurrenceTable[{a[1]==a[2]==0,a[3]==1,a[n]==Abs[a[n-1]-a[n-2]]+(-1)^n
> a[n-3]},a,{n,80}]
>
> I will submit that program once the OEIS website is operating again (it
> appears to be down at the moment).
>
> Apologies for the prior posting on this sequence.
>
> But, once again, even with my now-corrected Mma program, is the
> offset correct?
>
> Best,
>
> Harvey
>
>
> -----Original Message-----
> From: seqfan-bounces at list.seqfan.eu
> [mailto:seqfan-bounces at list.seqfan.eu] On Behalf Of Harvey P. Dale
> Sent: Monday, February 27, 2012 9:05 AM
> To: Sequence Fanatics Discussion list
> Subject: [seqfan] A119558
>
> This Mma program implements the definition of the above
> sequence but generates quite different terms:
>
>
>
> RecurrenceTable[{a[1]==a[2]==0,a[3]==1,a[n]==Abs[a[n-1]-a[n-2]]+(-1)^(n
> a[n-3])},a,{n,80}]
>
>
>
> Is the Mma program wrong, or are the terms of the sequence wrong?
>
>
>
> Best,
>
> Harvey
>
> P.S. In any event, given the definition of the sequence, shouldn't the
> offset be changed?
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