[seqfan] Re: (no subject)
Maximilian Hasler
maximilian.hasler at gmail.com
Sat Oct 31 01:02:27 CET 2009
for(B=2,99,for(n=1,9999,is_cz(n,B)& !print1([n,B]", ")&break))
[3, 3], [6, 5], [100, 7], [27, 9], [12, 10], [36, 17], [24, 21],
[3125, 25], [48, 44], [144, 70], [216, 71], [96, 91], [486, 97],
Maximilian
On Fri, Oct 30, 2009 at 5:52 PM, <c.zizka at email.cz> wrote:
> Dear seqfans,
>
> n = (p_0 ^ a_0) *(p_1 ^ a_1)* ... *(p_m ^ a_m) = a_0 * (B^0) + a_1 * (B^1) + ... + a_m * (B^m) .
> p_i i-th prime ; a_(i<m) >=0, a_m >=1 , B integers.
>
> The equation has positive-integer solutions [n,B] :
> [3,3] [6,5] [10,3] [12,10] [24,21] [27,9] [36,17] [48,44] [71,34] [96,91] [100,7]
> (submitted to OEIS )
>
> Are there any other numbers n>12 for which [n,10] holds ?
>
> Ctibor
>
>
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