[seqfan] Re: Primorial Polynomial ?

[rgwv at rgwv.com]

{2, 5, 3, 13, 5, 3, 29, 3, 13, 13, 3, 5, 31, 7, 17}

a(0)=2 since {0, 2} -> 2
a(1)=5 since {1, 5, 11} -> 17
a(2)=3 since {0, 3, 5, 11} -> 19
a(3)=13 since {1, 13, 41, 179, 1063} -> 1297
a(4)=5 since {0, 5, 11, 31, 127, 709} -> 883
a(5)=3 since {1, 3, 5, 11, 31, 127, 709} -> 887
a(6)=29 since {0, 29, 109, 599, 4397, 42043, 506683, 7474967} -> 8028827
a(7)=3 since {1, 3, 5, 11, 31, 127, 709, 5381, 52711} -> 58979
a(8)=13 since {0, 13, 41, 179, 1063, 8527, 87803, 1128889, 17624813, 326851121} -> 345702449
a(9)=13 since {1, 13, 41, 179, 1063, 8527, 87803, 1128889, 17624813, 326851121, 7069067389} -> 7414769839
a(10)=3 since {0, 3, 5, 11, 31, 127, 709, 5381, 52711, 648391, 9737333, 174440041} -> 184884743
a(11)=5 since {1, 5, 11, 31, 127, 709, 5381, 52711, 648391, 9737333, 174440041, 3657500101, 88362852307} -> 92205237149
a(12)=31 since {0, 31, 127, 709, 5381, 52711, 648391, 9737333, 174440041, 3657500101, 88362852307, 2428095424619, 75063692618249, 2586559730396077} -> 2664143723676077
a(13)=7 since {1, 7, 17, 59, 277, 1787, 15299, 167449, 2269733, 37139213, 718064159, 16123689073, 414507281407, 12055296811267, 392654585611999} -> 405141271051747
a(14)=17 since {0, 17, 59, 277, 1787, 15299, 167449, 2269733, 37139213, 718064159, 16123689073, 414507281407, 12055296811267, 392654585611999, 14199419938376521, 565855918431234443} -> 580460479640662703
a(15)>13

-----Original Message-----
From: SeqFan <seqfan-bounces at list.seqfan.eu> On Behalf Of Hugo Pfoertner
Sent: Wednesday, 22 August, 2018 4:23 AM
To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
Subject: [seqfan] Re: Primorial Polynomial ?

There is an offset of 1 between Robert's numbering and the one used by CWW, as it is also used in the draft of http://oeis.org/draft/A318189. I can confirm CWW's results. It seems that in http://oeis.org/A007097 "a(23) from David Baugh using Kim Walisch's primecount, May 16 2016" a 128-bit version of the primecount program has been used. If someone has access to this version or can build it, it might be possible to find A318189(15).

On Wed, Aug 22, 2018 at 8:44 AM, Hans Havermann <gladhobo at bell.net> wrote:

> RGWv: "a(1) to a(15): {5, 3, 13, 5, 3, 29, 3, 13, 13, 3, 5, 127, 31, 
> 7, 17}." Replying to my posting of the sequence to a(11), Chai Wah Wu 
> previously noted: "a(12) = 31, a(13) = 7, a(14) = 17." Which one is correct?
>
> --
> Seqfan Mailing list - http://list.seqfan.eu/
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