COMMENTS ON A074981

[Neil Fernandez]

In message <3DA60875.C05A7371 at nk.ca>, Don Reble <djr at nk.ca> writes

>Someday, we might get this approximately right.
>
>> %S A074981 6,14,34,42,50,58,62,66,70,78,82,86,90,102,110,114,130,158,178,182,2
>02,
>> %T A074981 210,226,230,238,246,254,258,266,274,278,290,302,306,310,314,322,326
>,
>> %U A074981 330,342,358,374,378,390,394,398,402,410,418,422,426,430,434,438,442
>
> 50 =  2^7 - -1^3
> 82 =  9^2 - -1^3
>226 = 15^2 - -1^3
>246 = 11^2 - -5^3
>290 = 17^2 - -1^3
>342 =  7^3 -  1^3  (Thanks, Reinhart)
>442 = 21^2 - -1^3

But for this sequence, n must be greater than 0:

%N A074981 Conjectured list of positive numbers which are not of the
form m^p-n^q, where m,n,p,q are integers with m>0, n>0, p>1, q>1.

Neil
-- 
Neil Fernandez