[Fwd: A063921]

[David W. Wilson]

> Dear Professor David Wilson,
>  
> Your seq. A063921 is already in the EIS as A007666: 

[Note:  I am not a professor or doctor of anything.  The proper title is
"Hacker David Wilson", but "Dave" will do.]
 
> ID Number: A007666 (Formerly M3753)
> Sequence:  1,5,6,353,72,1141
> Name:      a(n) = smallest number k such that k^n is sum of n n-th powers, or 0 if no
>               solution exists.
> References D. Wells, The Penguin Dictionary of Curious and Interesting Numbers.
>               Penguin Books, NY, 1986, 164.
> See also:  k^n = T(n,1)^n + .. + T(n,n)^n, where T(,) is given in A061988.
> Keywords:  nonn,hard,nice
> Offset:    1
> Author(s): njas, Robert G. Wilson v (rgwv at kspaint.com)

Vladeta:  Thanks for pointing out the repeat.
NJAS: Please see that A0063921 bites the dust.

> But I am not sure that the last term in A007666 is correct since
>
> 74^6 + 234^6 + 402^6 + 474^6 + 702^6 + 894^6 + 1077^6 = 1141^6

There is no 6-term rep for 1141^6?

> All the best,
>
> Vladeta Jovovic