[seqfan] Re: verifying A153063 with a(n)=a^2-n^a

Robert Gerbicz robert.gerbicz at gmail.com
Sat Nov 27 16:14:22 CET 2010


2010/11/27 Richard Mathar <mathar at strw.leidenuniv.nl>

>
> Help! I am running into problems with A153063 http://oeis.org/A153063 .
> I thought a(-1)=1, a(n)=floor(a(n-1)^2-n^a(n-1)) with offset 0 would work,
> with a glance at the Mma code. Basically the step 4 -> -2092 means one
> would need to have some 16-(...)^4 to generate -2092, and that seems
> to be impossible.
>
> RJM
>
>
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The sequence is good, but the offset should be 0,5
Code in PARI-GP:
a=1;for(n=0,7,a=a^2-n^a;print1(floor(a)","))



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