[seqfan] Re: b-file mismatch A050801
Harry J. Smith
hjsmithh at sbcglobal.net
Mon Jan 12 23:47:57 CET 2009
I'm generating a good b-file for this but it only has 412 entries so far. I
was using my PARI program
{
m=1;
a=0;
until (0,
a=a+1;
a2=a*a;
b1=((a2/2)^(1/3))\1;
for (b=b1, a,
b3=b*b*b;
c1=1;
if (a2 > b3, c1=((a2-b3)^(1/3))\1;);
for (c=c1, b,
d=b3 + c*c*c;
if (d > a2 && c == 1, break(2));
if (d > a2, break);
if (a2 == d,
print(m, " ", a); write("b050801.txt", m, " ", a); m=m+1;
break(2);
);
)
)
)
}
Maybe this could be improved upon. I will attach the b-file I have with
n=1,.,412
[seqfan] b-file mismatch A050801
Richard Mathar mathar at strw.leidenuniv.nl
<mailto:seqfan%40list.seqfan.eu?Subject=%5Bseqfan%5D%20%20b-file%20mismatch%
20A050801&In-Reply-To=>
Fri Jan 9 16:43:18 CET 2009
_____
The b-file
http://www.research.att.com/~njas/sequences/b050801.txt
is in obvious discrepancy with the main database entry, first at
a(3). It probably shows values of n "with repetition" of some kind.
I propose someone submits a b-file which is consistent with the
main entry, listing solutions "n" sorted and uniq'ed.
http://research.att.com/~njas/sequences/A050801
Richard J. Mathar
-Harry
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