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Search: id:A091119
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A091119 Number of primes of the form 6k+5 less than 10^n. +0
2
1, 12, 86, 616, 4806, 39265, 332383, 2880936, 25424819, 227529386 (list; graph; listen)
OFFSET

1,2

COMMENT

Computed by T. D. Noe (noe(AT)sspectra.com), Dec 19, 2003.

LINKS

Eric Weisstein's World of Mathematics, Modular Prime Counting Function

FORMULA

a(n)=A006880(n)-2-A091115(n). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 20 2007

CROSSREFS

Cf. A091118. Equals -1+A091116.

Sequence in context: A095267 A098206 A104911 this_sequence A046023 A137207 A082814

Adjacent sequences: A091116 A091117 A091118 this_sequence A091120 A091121 A091122

KEYWORD

nonn,more

AUTHOR

Eric Weisstein (eric(AT)weisstein.com), Dec 19, 2003

EXTENSIONS

a(10) from Robert G. Wilson v (rgwv(AT)rgwv.com), Dec 22 2003

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Last modified September 5 01:44 EDT 2008. Contains 143476 sequences.


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