[seqfan] Need help recovering lost pages from former Rusin web site

Neil Sloane njasloane at gmail.com
Sat May 7 16:24:18 CEST 2016

Dear Sequence Fans, We have repeatedly tried to contact Dave Rusin, but he
has not replied to our messages. There are about 40 links in the OEIS to
pages from his former web site that are no longer available.

We need help in recovering them from the Wayback machine (or other sources).
See the Internet Archive under
If anyone can help recover one or more of these pages it would be greatly

There are about 19 distinct pages that have been lost, as follows:

%H A000001 D. Rusin, <a href="
%H A000041 Kevin S. Brown, <a href="
Partitions of Numbers</a>
%H A000217 sci.math, Jun 98 <a href="
http://www.math.niu.edu/~rusin/known-math/98/sq_tri">Square numbers that
are triangular</a>
%H A001035 D. Rusin, <a href="
http://www.math.niu.edu/~rusin/known-math/97/finite.top">Number of
%H A002965 Dave Rusin, <a href="
http://www.math.niu.edu/~rusin/known-math/99/farey">Farey fractions on
%H A003504 D. Rusin, <a href="
http://www.math.niu.edu/~rusin/known-math/96/smallnums">Law of small
%H A014234 Harry J. Smith, <a href="
http://www.math.niu.edu/~rusin/known-math/98/pi_x">PrimePi2 - Computes the
Prime Pi(x) counting function</a>
%H A019590 D. Rusin, The Mathematical Atlas, <a href="
http://www.math.niu.edu/~rusin/known-math/index/11D41.html">Higher degree
equations; Fermat's equation</a>
%H A028419 D. Rusin, <a href="
Problem (Triangles)</a>
%H A028507 Dave Rusin, <a href="
http://www.math.niu.edu/~rusin/papers/uses-math/music/12">Why 12 tones per
%H A035239 <a href="http://www.math.niu.edu/~rusin/known-math/95/1000digits">Solution
for n=1000</a>
%H A035251 Sci.math, <a href="
http://www.math.niu.edu/~rusin/known-math/98/pells">General Pell equation:
x^2 - N*y^2 = D</a>, 1998
%H A045996 I. L. Caestro, <a href="
sci.math 22 Oct 2000 [From _R. J. Mathar_, May 19 2010]
%H A051576 D. Rusin, <a href="
Problem</a>. [Broken link?]
%H A051635 Greg Kuperberg, <a href="
http://www.math.niu.edu/~rusin/known-math/93_back/prizes.erd">The Erdos
kitty: At least $9050 in prizes!</a>, Newsgroups: rec.puzzles, sci.math,
%H A055557 Dave Rusin, <a href="
http://www.math.niu.edu/~rusin/known-math/98/exp_primes">Primes in
exponential sequences</a>
%H A072716 Dave Rusin, <a href="
http://www.math.niu.edu/~rusin/research-math/abcn/">For which values of n
is a/b + b/c + c/a = n solvable?</a>
%H A111152 Dave Rusin, <a href="
counterexamples to FLT in other rings</a>
%H A156668 Dave Rusin, <a href="
http://www.math.niu.edu/~rusin/known-math/96/two_fifths">Re: Help with
diophantine equ.</a>, sci.math newsgroup

Some of them appear multiple times in the OEIS.

The usual way we handle this problem is to leave the existing link in place
(in case it should come back to life), but to add "[Broken link]".
Then we upload the new copy to the OEIS server, with a link that says
something like "[Cached copy]"

If we divide up the work this should be a manageable job.

Neil Sloane and Antti Karttunen

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