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<DIV> The next terms are 132,141,143,144,145,152,156,173,252 (if I did not make a mistake).</DIV>
<DIV>There are no others up to 287; I was unable to determine whether A000287 contains any primes,</DIV>
<DIV>partly because its definition is unclear.</DIV>
<DIV> </DIV>
<DIV>Incidently, several of these early sequences should have the "more" keyword.</DIV>
<DIV>A000173 - in the list above - is the one I noted, but there were others.</DIV>
<DIV> </DIV>
<DIV>Franklin T. Adams-Watters<BR>16 W. Michigan Ave.<BR>Palatine, IL 60067<BR>847-776-7645</DIV>
<DIV> </DIV> <BR>-----Original Message-----<BR>From: N. J. A. Sloane <njas@research.att.com><BR>To: seqfan@ext.jussieu.fr<BR>Sent: Fri, 21 Oct 2005 22:09:20 -0400 (EDT)<BR>Subject: Re sequences containing no prime<BR><BR>
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<DIV class=AOLPlainTextBody id=AOLMsgPart_0_b155ad1e-c46d-48c6-ae4b-c5d933ed5aae><PRE><TT>
Thanks Alonso for this suggestion. I checked up through A000128.
Most of them do contain a prime. If I did not make a mistake,
the sequence (which will be in the OEIS in a moment) begins
as follows:
%I A111157
%S A111157 4,7,12,35,56,66,82,118
%N A111157 Numbers n such that sequence A_n in this database does not contain a
prime.
%C A111157 That is, the complete sequence A_n, not just the terms that are shown
in the entry, does not contain a prime or the negative of a prime. The only
exception to this is for sequences with keyword "dead", when only the visible
terms are to be considered.
%C A111157 No other terms below 128.
%O A111157 1,1
%K A111157 nonn,dumb,more
%H A111157 PrimeFan, <a href="<A href="http://www.geocities.com/primefan/EsotericIntegerSequences.html" target=_blank>http://www.geocities.com/primefan/EsotericIntegerSequences.html</A>">Esoteric
Integer Sequences</a> (Gives a different version.)
%A A111157 njas, following a suggestion of Alonso Del Arte (alonso.delarte(AT)gmail.com),
Oct 21 2005
</TT></PRE></DIV><!-- end of AOLMsgPart_0_b155ad1e-c46d-48c6-ae4b-c5d933ed5aae --></DIV></DIV>
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