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Search: id:A139390
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| 0, 5, 17, 100, 791, 5830, 42468, 327198, 327198, 2575838, 20476640, 166554645, 1353822880, 11150031169, 92258920888, 769310640408, 6447635236133, 54292816788848, 459112338326268, 3896226837717653, 33172345145637461
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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For large n, these numbers can be closely approximated by the number of
primes < (3^n)^2. For example, the sum of primes < 3^12 = 11150031169. The
number of primes < (3^12)^2 = 3^24 = 11152818693. The error here 0.000250.
The second term, 5 is the addition of the primes 2 and 3 since we defined the
sequence as less than or equal.
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LINKS
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Cino Hilliard, Sum of Primes.
Cino Hilliard, Sumprimesgmp program.
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CROSSREFS
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Cf A057958.
Sequence in context: A026685 A089923 A145041 this_sequence A145824 A076516 A145986
Adjacent sequences: A139387 A139388 A139389 this_sequence A139391 A139392 A139393
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KEYWORD
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nonn
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AUTHOR
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Cino Hilliard (Hillcino368(AT)hotmail.com), Jun 09 2008
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