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A086688
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Number of primes < prime(n)^3.
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0
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4, 9, 30, 68, 217, 327, 656, 882, 1457, 2707, 3228, 5194, 6850, 7789, 9916, 13746, 18411, 20179, 26062, 30597, 32984, 40991, 46959, 56924, 72217, 80725, 85182, 94695, 99669, 110127, 152280, 165951, 187910, 195660, 237427, 246434, 274614
(list; graph; refs; listen; history; internal format)
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OFFSET
| 2,1
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PROG
| (PARI) primeslessp3(n) = \primes less than primes cubed { sr=0; forprime(x=2, n, y=pi(x^3); sr+=1.0/y; print1(y", "); ); print(); print(sr) } pi(n) = { c=0; forprime(x=2, n, c++); return(c) }
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CROSSREFS
| Sequence in context: A127768 A186650 A091658 * A151270 A149113 A149114
Adjacent sequences: A086685 A086686 A086687 * A086689 A086690 A086691
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KEYWORD
| easy,nonn
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AUTHOR
| Cino Hilliard (hillcino368(AT)gmail.com), Jul 28 2003
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