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Search: id:A111157
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| A111157 |
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Numbers n such that sequence A_n in this database does not contain a prime. |
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+0
1
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| 4, 7, 12, 35, 56, 66, 82, 118, 132, 141, 143, 144, 145, 152, 156, 252
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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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.
No other terms below 287. Is 287 a member? This requires proof.
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LINKS
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PrimeFan, Esoteric Integer Sequences (Gives a different version.)
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CROSSREFS
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Cf. A111198.
Sequence in context: A023624 A123194 A102953 this_sequence A162957 A051456 A031142
Adjacent sequences: A111154 A111155 A111156 this_sequence A111158 A111159 A111160
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KEYWORD
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nonn,more,dumb
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), following a suggestion of Alonso Del Arte (alonso.delarte(AT)gmail.com), Oct 21 2005
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EXTENSIONS
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Replaced a geocities.com link - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 30 2009
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