# [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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