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A060969 Number of prime cubes <= 2^n. +0
1
0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 6, 8, 9, 11, 12, 15, 18, 22, 26, 31, 37, 46, 54, 66, 79, 97, 117, 141, 172, 209, 257, 309, 376, 457, 564, 687, 842, 1028, 1266, 1549, 1900, 2327, 2861, 3512, 4323, 5320, 6542, 8072, 9936, 12251, 15104, 18640, 23000, 28428 (list; graph; listen)
OFFSET

0,5

LINKS

Index entries for sequences related to numbers of primes in various ranges

EXAMPLE

n=10, prime-cubes not exceeding 1024 are: 8,27,125,343 so a(10)=4.

MATHEMATICA

Table[ PrimePi[ Floor[ 2^(g/3)//N ] ], {g, 1, 90} ]

CROSSREFS

A007053, A036386.

Sequence in context: A029072 A029027 A035448 this_sequence A030699 A083802 A100881

Adjacent sequences: A060966 A060967 A060968 this_sequence A060970 A060971 A060972

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), May 09 2001

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Last modified September 7 15:23 EDT 2008. Contains 143483 sequences.


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