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Search: id:A144311
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| A144311 |
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The length of the longest sequence of consecutive integers, each equal 1 or -1 modulo at least one of the first n primes |
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+0
1
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| 1, 5, 11, 29, 41, 65, 107, 149, 203, 257, 347, 527, 545, 617, 707, 869
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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For n>1, a(n)==5 (mod 6).
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EXAMPLE
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For the first three terms the sequences are {1}, {1,2,3,4,5}, and {73,74,...,101}.
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CROSSREFS
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Cf. A058989
Adjacent sequences: A144308 A144309 A144310 this_sequence A144312 A144313 A144314
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KEYWORD
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nonn,more,hard,new
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AUTHOR
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Andrew Carter (acarter09(AT)newarka.edu), Sep 17 2008
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EXTENSIONS
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a(8)-a(16) from Max Alekseyev (maxale(AT)gmail.com), Nov 18 2009
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