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<DIV><FONT face=Arial size=2><SPAN class=844135821-25042003>Here's one of those
questions that's probably been looked at many times, but... </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=844135821-25042003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=844135821-25042003>Given a strictly
increasing sequence r of positive integers, let r* be the complement of r,
obtained by arranging in increasing order all the positive integers not in
r. How can the generating function of r* be obtained from that of
r? </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=844135821-25042003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=844135821-25042003>Possibly someone
knows of references to special cases? </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=844135821-25042003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=844135821-25042003>Clark
Kimberling </SPAN></FONT></DIV></BODY></HTML>