Ruud H.G. van Tol on Sat, 24 Jan 2026 23:09:49 +0100


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Re: A000001, galpol



On 2026-01-24 11:44, Bill Allombert wrote:
> On Sat, Jan 24, 2026 at 11:30:29AM +0100, Ruud H.G. van Tol wrote:

>> I'm adding PARI-code to https://oeis.org/A000001.
>>
>> aupto(m)= vector(m+1, i, if(i>1, galoisgetgroup(i-1), 0));
>>
>> Is that a proper way?
>>
>> I had to run "brew install pari-galpol" first.
>> It stops at 143, can that easily be extended?
>
> Sure, but if you need group data, you should rather use GAP.
> We might extend galpol to 255 at some point, but that's about it.
> There is no much purpose for PARI to copy GAP databases.

I now linked a file https://oeis.org/A000001/a000001_1.txt
and used the galoisnbpol(p_order, p_fail = -1) implementation in there.

-- Ruud