[seqfan] A103969 is wrong, maybe useless
franktaw at netscape.net
franktaw at netscape.net
Sat Mar 6 09:49:43 CET 2010
http://www.research.att.com/~njas/sequences/A103969 is titled "Numbers
n such that n=A005941(A005940(n))." But A005941 is "Inverse of the
Doudna sequence A005940.", so this should be just the positive
integers. And indeed, the numbers not in A103969 do nevertheless have
n=A005941(A005940(n)).
There is a Mathematica program in A103969, so it must be computing
something. I can't really tell what, from a quick examination. Is
this just a buggy program and a sequence that should not be present,
or is it something of some possible interest?
Franklin T. Adams-Watters
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