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A038098 Number of primes < n^3. +0
1
0, 4, 9, 18, 30, 47, 68, 97, 129, 168, 217, 269, 327, 400, 476, 564, 656, 765, 882, 1007, 1147, 1298, 1457, 1633, 1821, 2020, 2227, 2460, 2707, 2961, 3228, 3512, 3817, 4137, 4483, 4821, 5194, 5579, 5995, 6413, 6850, 7308, 7789, 8293 (list; graph; listen)
OFFSET

1,2

EXAMPLE

a(2)=4 because the only primes < 8 are 2,3,5 and 7.

PROGRAM

(Other) sage: [prime_pi(n^3) for n in xrange(1, 45)] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 06 2009]

CROSSREFS

Sequence in context: A008025 A008020 A008146 this_sequence A111384 A008219 A008223

Adjacent sequences: A038095 A038096 A038097 this_sequence A038099 A038100 A038101

KEYWORD

nonn

AUTHOR

Joe K. Crump (joecr(AT)carolina.rr.com)

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.


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