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Search: id:A111198
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| A111198 |
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Numbers n such that sequence A_n does not contain a perfect square. |
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+0
2
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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 perfect square or the negative of a perfect square. (In particular, sequences containing 0 or 1 are excluded.)
No more terms up through 130. Does A000131 contain a perfect square?
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EXAMPLE
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The first term, 37, refers to the sequence A000037, the non-squares. All of A000001-A000036 contain obvious square terms.
The second term, 40, refers to A000040, the primes. Obviously any sequence which is a subset of the primes (e.g. A000043) also gives a term.
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CROSSREFS
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Sequence in context: A111043 A041683 A064172 this_sequence A081645 A069963 A071855
Adjacent sequences: A111195 A111196 A111197 this_sequence A111199 A111200 A111201
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KEYWORD
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nonn,dumb
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AUTHOR
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Zak Zeidov (zakseidov(AT)yahoo.com), Oct 24 2005
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EXTENSIONS
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Let's have no more sequences of this type! - njas, Oct 23 2005
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