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 A289494 Number of primes in the interval [3n, 4n]. 8
 1, 1, 1, 1, 2, 2, 1, 2, 2, 2, 3, 4, 3, 3, 3, 3, 4, 4, 5, 5, 5, 5, 5, 4, 4, 6, 6, 6, 7, 6, 6, 7, 7, 6, 7, 6, 5, 6, 6, 7, 8, 9, 8, 8, 9, 9, 8, 9, 10, 11, 10, 10, 10, 10, 9, 9, 10, 10, 11, 11, 11, 11, 12, 11, 11, 11, 10, 12, 12, 13, 14, 14, 14, 15, 14 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 LINKS FUNG Cheok Yin, Table of n, a(n) for n = 1..10000 Andy Loo, On the Primes in the Interval [3n, 4n], arXiv:1110.2377 [math.NT], 2011. CROSSREFS Cf. A035250, A289493, A289495, A289496, A289497, A289498, A289499, A289500. Sequence in context: A197081 A029395 A029282 * A029286 A286221 A321347 Adjacent sequences:  A289491 A289492 A289493 * A289495 A289496 A289497 KEYWORD nonn,easy AUTHOR FUNG Cheok Yin, Jul 07 2017 STATUS approved

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Last modified May 25 00:59 EDT 2019. Contains 323534 sequences. (Running on oeis4.)