The On-Line Encyclopedia of Integer Sequences (OEIS)

A289499 revision #5

A289499

Number of primes in the interval [8n, 9n].

0, 1, 0, 0, 2, 1, 2, 2, 2, 2, 2, 4, 3, 1, 2, 3, 4, 3, 3, 4, 3, 5, 4, 4, 2, 5, 6, 6, 5, 5, 6, 7, 6, 4, 6, 5, 5, 6, 6, 6, 7, 7, 8, 7, 7, 7, 8, 7, 8, 9, 9, 11, 9, 9, 9, 10, 10, 8, 8, 7, 8, 8, 7, 8, 9, 9, 11, 11, 13, 12, 12, 13, 13, 14, 13, 13, 13, 12, 12, 13

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OFFSET

1,5

LINKS

Table of n, a(n) for n=1..80.

FUNG Cheok Yin, Table of n, a(n) for n = 1..10000

CROSSREFS

Cf. A035250, A289493, A289494, A289495, A289496, A289497, A289498, A289500.

Sequence in context: A031281 A203181 A113793 * A215904 A083552 A326034

Adjacent sequences: A289496 A289497 A289498 * A289500 A289501 A289502

KEYWORD

nonn,easy

AUTHOR

FUNG Cheok Yin, Jul 07 2017

STATUS

editing