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A289496
Number of primes in the interval [5n, 6n].
8
1, 1, 1, 1, 1, 1, 2, 3, 2, 2, 2, 3, 3, 4, 3, 2, 3, 4, 6, 5, 3, 3, 3, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 6, 6, 5, 7, 7, 6, 7, 8, 8, 9, 9, 8, 9, 9, 9, 9, 8, 9, 10, 9, 8, 8, 7, 8, 9, 10, 10, 10, 9, 10, 11, 11, 12, 11, 12, 11, 11, 11, 12, 13, 13, 12, 13, 14, 14, 14
OFFSET
1,7
LINKS
MATHEMATICA
Table[Count[Range[5n, 6n], _?PrimeQ], {n, 80}] (* Harvey P. Dale, Sep 07 2017 *)
KEYWORD
nonn,easy
AUTHOR
FUNG Cheok Yin, Jul 07 2017
STATUS
approved