| Bill Allombert on Mon, 25 May 2026 19:36:05 +0200 |
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| Re: numdiv records |
On Mon, May 25, 2026 at 06:38:32PM +0200, Ruud H.G. van Tol wrote:
> oeis:A00218 lists numdiv-records:
> first(nn)= {
> my(n=0, r=0, s=1, t);
> vector
> ( nn
> , i
> , while( (t=numdiv(n+=s)) <= r, );
> 2==s || n<10 || s=2;
> r=t
> );
> }
>
> How to do this more efficiently?
Use forfactored ?
Cheers,
Bill.