gripes

[Simon Colton]

Dear Seqfans,

For my part, I'm happy with the quality of the encyclopedia - it must be a
tremendous job maintaining it.

One problem which isn't easy to fix is the fact that the Eric Weisstein's
World of Mathematics (formerly treasure trove) is no longer available online
(pending court cases, which could take a considerable time to resolve).

Many sequences such as the one below have no definition, just a pointer
to Eric's site. For example:

%I A051038
%S A051038 
1,2,3,4,5,6,7,8,9,10,11,12,14,15,16,18,20,21,22,24,25,27,28,30,32,33,
%T A051038 
35,36,40,42,44,45,48,49,50,54,55,56,60,63,64,66,70,72,75,77,80,81,84,
%U A051038 88,90,96,98,99,100,105,108,110,112,120,121,125,126,128,132,135,140
%N A051038 11-smooth numbers.
%H A051038 E. W. Weisstein, Link to a section of The World of Mathematics.
%Y A051038 Cf. A002473, A003586, A051037.
%K A051038 nonn
%O A051038 1,2
%A A051038 Eric W. Weisstein (eww at wolfram.com)

Because we cannot go to the link, it is not possible to get a definition of
11-smooth numbers which (at least for me), makes the entry useless.
A quick grep of the Encyclopedia showed that at least
2,000 sequences have a link to Eric's site, although it is not clear how many
are definition-less. Any suggestions for fixing this problem? We could just
wait and hope that the court case is resolved in Eric's favour, or we could
possibly ask Eric to update some of the sequence definitions in the
Encyclopedia.

Also, another request: Could we upgrade perfect numbers (A000396) and
lucky numbers (A000959) to "core" rather than just "nice". So many sequences
are built from perfect and lucky numbers that I think they should be "core".

Cheers,

Simon.

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http://www.dai.ed.ac.uk/~simonco
http://www.aisb.org.uk