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 A144311 The length of the longest sequence of consecutive integers, each equal 1 or -1 modulo at least one of the first n primes. 1
 1, 5, 11, 29, 41, 65, 107, 149, 203, 257, 347, 527, 545, 617, 707, 869 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS For n>1, a(n)==5 (mod 6). LINKS StackExchange, OEIS A144311 Generating function, May 10 2016. EXAMPLE For the first, second and fourth terms the sequences are {1}, {1,2,3,4,5}, and {73,74,...,101}. - corrected by Felix A. Pahl, May 10 2016 CROSSREFS Cf. A058989. Sequence in context: A049489 A242383 A141785 * A074367 A088486 A174917 Adjacent sequences:  A144308 A144309 A144310 * A144312 A144313 A144314 KEYWORD nonn,more,hard AUTHOR Andrew Carter (acarter09(AT)newarka.edu), Sep 17 2008 EXTENSIONS a(8)-a(16) from Max Alekseyev, Nov 18 2009 STATUS approved

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Last modified December 15 04:23 EST 2019. Contains 329991 sequences. (Running on oeis4.)