<div> </div>  <div>I found some interesting references through Google:</div>  <div> </div>  <div><A href="http://www.itsoc.org/publications/nltr/it1202.pdf">http://www.itsoc.org/publications/nltr/it1202.pdf</A><BR><A href="http://www.itsoc.org/publications/nltr/it0303web.pdf">http://www.itsoc.org/publications/nltr/it0303web.pdf</A><BR><A href="http://membership.kcatm.org/pub/summ2-06.pdf">http://membership.kcatm.org/pub/summ2-06.pdf</A></div>  <div> </div>  <div>Jeremy</div>  <div> </div>  <div>----------------------------------------------------------------------------------------<BR><BR><B><I>"N. J. A. Sloane" <njas@research.att.com></I></B> wrote:</div>  <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"><BR>Dear Seqfans, My old friend Bernardo Recaman Santos just<BR>sent a really nice sequence:<BR><BR>%I A116700<BR>%S A116700 12,21,23,31,32,34,41,42,43<BR>%N A116700 "Early bird" numbers: write
 the natural numbers in a string 12345678910111213....<BR></BLOCKQUOTE>